VAZ 2107 injector how to set the ignition correctly 8 valves

Contact ignition system (carburetor)

Old "sevens" with a carburetor engine, as a rule, are equipped with a classic contact system. To accurately check and adjust the ignition, a strobe is needed, but due to the rarity of such a device, a simple 12-volt light bulb can be used. Prepare two keys - for the crankshaft and an open-end one for “thirteen”.

Installation of the ignition of a VAZ-2107 equipped with a contact system is carried out as follows:

• Turn off the engine (if it was running) and wait until its temperature drops to a safe level. Place the piston of the 1st cylinder in the desired position. To do this, unscrew the spark plug from the 1st cylinder, close the hole and turn the crankshaft in the direction of rotation of the clock hand.
• Wait for maximum pressure on your finger. Rotate the shaft until the mark on the pulley aligns with the notch on the timing case. If you have problems finding the marks, wipe the surface from dust and dirt.
• If it matches the second mark, we can talk about the ignition advance by 5 degrees. If you fill with fuel with an octane rating of 92 or 95, you can leave this parameter. Remove the key from the crankshaft, screw the spark plug into place and return the contacts to their place.

The next task is to determine the ignition timing. To do this, work with a distributor. Take the key to “thirteen” and make several rotations of the nut in the direction of unscrewing. The following is the algorithm:

• Take a 12 Volt lamp and connect two power wires to it.
• Connect one of them to the machine ground, and the second to one of the coil terminals (the one from which the secondary voltage comes out).
• Scroll the distributor cap. Rotate until the lamp goes out.
• Put everything back in the same position and use the car.

As a rule, such a setting of the ignition timing of the VAZ-2107 gives good results and helps solve a number of problems - eliminate starting problems, reduce fuel consumption and even improve the dynamics of the car.

Preparing for correct ignition setting

First you need to make sure that:

• all the spark plugs are in good working order, the gaps in them are adjusted, no carbon deposits are formed, if there is carbon deposits, then the spark plugs need to be calcined. On the left is a candle with carbon deposits, on the right is a more normal one.
• spark plug wires have good contact and insulation;
• The contacts of the distributor are not burnt. If they are burnt, you need to replace the contact group.
• the quality of the wire from the coil and the contacts are good, the insulation is normal, the ignition coil is working;
• All dust and dirt should be removed from the coil, distributor contacts, and distributor cap;
• The adjustment must be performed with the engine fully warmed up; to do this, wait until the radiator cooling fan turns on.

Now let’s talk about how you can set the ignition on a VAZ 2107. The adjustment is carried out in a simple way, using a light bulb. You can also set the ignition using a spark or strobe. The sequence of actions is as follows:

• remove the spark plug from the first cylinder;
• insert a rubber plug of a suitable size into the hole;
• then rotate the crankshaft either with a gas wrench, or with a ratchet wrench, or with a special crankshaft wrench, slowly until the plug comes out. This means the piston is at or very close to top dead center;
• after this, carefully align the marks of the crankshaft pulley and the middle mark on the front engine cover; The middle mark indicates 5° ignition advance.

• after that, remove the ratchet wrench, screw the spark plug back in and install the wire;
• prepare a 12 V light bulb, one for the ignition coil output (plus), and the second for ground;
• determine the ignition timing - loosen the distributor fastening nut with a 13mm wrench;
• turn on the ignition, the light comes on;
• turn the distributor rotor clockwise until the light goes out;
• slowly turn the distributor rotor COUNTERclockwise until the light comes on again. This reverse stroke is a fine adjustment when the torque is set correctly.
• fasten the nut.

Now you need to check whether the torque setting is correct. To do this, you need to choose a straight section of the road, without ups and downs, and with a fully warmed-up engine, we drive in 4th gear at a speed slightly lower than usual, about 50 km/h, and then sharply accelerate. A characteristic “knock of fingers” appears. After the speed increases by 5 km/h, the knocking should stop on its own. This means that the ignition timing is set correctly. If the knocking noise does not occur at all, or lasts much longer, the angle setting is insufficient and the adjustment must be repeated.

The Zhiguli “classic” VAZ 2107 does not belong to modern cars, made with the latest technology and stuffed with sophisticated electronics. This is its beauty - you don’t need to contact car service specialists for any reason; most car maintenance work can be done by the owner himself. This also includes the procedure for setting up the ignition, which anyone can do after studying the detailed instructions.

• 1 When should you turn on the ignition?
• 2 Types of systems
• 3 Preparatory stage
• 4 Settings on carburetor modifications of the VAZ 2107

• 5 Checking and adjusting the advance angle
• 6 How to set the ignition without a light bulb - video
• 7 How to set the ignition on a VAZ 2107 with an injector?
• 8 Video on checking the ignition module

Contactless (electronic) ignition, carburetor

Many car owners are switching to a more accurate (electronic) type of ignition. To adjust the device yourself, you need to have skills in working with the electrical part of a car. If you do not have sufficient knowledge, entrust the work to experienced specialists.

Prepare the instrument for tuning. You will need keys (for “eight”, “ten” and “thirteen”), a Phillips screwdriver, a drill and a pair of self-tapping screws.

Pre-install the contactless system itself, consisting of the following elements:

Trambler. Start by replacing the distributor by lifting the cover of the latter (this is how you gain access to the “slider”). Place the slider in a position that can be easily adjusted during installation. It is desirable that the notch be on the block opposite the middle mark of the device scale.

Use a “thirteen” wrench to tighten the fastening nut, and then dismantle the assembly. Now disconnect the central wire connecting the coil and the distributor. Mount the non-contact type sensor and adjust the slider taking into account the previously made mark. Align the distributor body along the notches. Replace the cover and return the wires to their place.

Coil. In the next step, move on to the ignition coil. Take the eight key and twist the wires that are connected to the device. Now use the key to “ten” to push the assembly away from the car body.

Install the new coil taking into account the position of contacts “B” and “K”.

Fix the coil and connect the discarded and new wires to the contact group. Pay attention to the colors of the latter (as a rule, they are identical for the old and new devices). Connect the brown wire to terminal “K” and the blue wire to “B”. Now connect the center wire.

• Switch. Start by choosing a location for this node. In the "seven" the best point for installation is between the headlight on the left side and the washer. In this area there is a flat area on which the device is placed. To begin, lean the switch and mark the mounting locations. After this, screw in the screws. Do not rush to tighten the second fastener - place a black wire under it.

As soon as the described work is completed, check the quality of the connection of the wiring elements and start the engine. The next stage is installing the ignition of the VAZ-2107, which will be discussed below.

Checking the module and adjusting the ignition of the VAZ 2107 (injector)

The VAZ 2107 ignition module (injector) is a unit whose malfunctions are quite difficult to diagnose. Problems in the operation of the module are paid attention to only after serious malfunctions occur in the engine. If the engine does not start, you should try adjusting the ignition. If the engine runs unevenly, a serious check of the functionality of the VAZ 2107 ignition module may be required.

The ignition is an electronic system that converts the low voltage of the vehicle's electrical system into high voltage and supplies the latter to the spark plug electrodes.

Checking the ignition system elements

Engine surges, especially in the rain, are the result of damaged insulation of high-voltage cables. The insulation of the wires must not have cracks or damage. You can check the insulation for damage using a wire connected to ground. If you pass it over the insulation while the engine is running, a spark will be observed in areas with damaged insulation. Another telltale sign of poor insulation is an obvious electric shock when touching high-voltage wires while the engine is running.

A broken high-voltage wire can be easily determined using an ohmmeter. The resistance should be between 3-10 kOhm. The spread of indicators between the wires should not be more than 1-2 kOhm.

Signs of breakdown

When the ignition is turned on, the ECU malfunction indicator light comes on and should go out after the engine starts. A burning light is the first sign of problems with the ignition system. Other prerequisites for diagnosing the ignition module are fluctuations in engine speed and starting problems. The cause of such failures may be faulty high-voltage cables or spark plugs, so before starting the ignition diagnostics of the VAZ 2107 (injector), you need to make sure that they are in good condition. Cylinder misfires are often caused by compression problems or a damaged intake manifold gasket. This must be taken into account when searching for the causes of engine failure.

Preparing for ignition diagnostics

To check the condition of the elements of the ignition system and the module as a whole, you will need a multimeter - a device designed to measure the electrical characteristics of the system (resistance, voltage, current). It can be used to determine the voltage supplied by the module to the ignition coil, the condition of the coil, and the reasons for the loss of current in the circuit. For ease of use, the ignition module can be removed.

Removing the ignition module VAZ 2107

1. Remove the air filter housing.
2. Disconnect the negative terminal from the battery.
3. Disconnect the high voltage cables from the ignition module cover.
4. We unscrew the three nuts securing the VAZ 2107 ignition module and disconnect it from the bracket.

Checking the ignition coil

The coil is checked for two indicators: the presence of a short circuit and a break. Before diagnosing, disconnect the ignition coil. Next, one probe of the device is connected to the central contact of the coil, the second - to the body (ground). If the display shows resistance to infinity, there is no short circuit.

The primary winding of the coil for an open circuit occurs differently. The probes of the device must be connected to the left and right contacts. The resistance between them should be within 3-3.5 Ohms.

If the resistance values ​​of the primary winding are not normal or there is a short circuit in the coil to the housing, it must be replaced.

Ignition adjustment

Replacing a VAZ 2107 injector does not require adjusting the ignition timing. The electronic control unit uses a sensor to independently determine the optimal ignition timing. The participation of the car owner in setting up the operation is limited to synchronizing the engine using tags.

To check the functionality of the ECU and the functionality of the sensors, you need to connect a computer with specialized software. In this way, the cause of most malfunctions in the electronic ignition system can be determined.

It is also worth checking the operation of the throttle position sensor yourself. When the throttle valve is closed, the voltage on the sensor should not exceed 0.55 volts, and when fully open - 4.5 volts. Measurements should be made with a voltmeter with the ignition on.

Ignition adjustment in static position:

1. Find a strobe light. If this is not the case, do the work by ear.
2. Loosen the nut holding the ignition coil.
3. Start the engine and warm it up.
4. Rotate the distributor housing left and right.
5. Command your assistant to watch the speed (they should be at 2000 rpm).
6. Listen to the engine noise. Try to catch the moments when there are “dips” or changes in rotation speed.
7. Achieve a situation where the engine runs smoothly and produces the highest speed. In this case, the work should be as rhythmic as possible.
8. Tighten the distributor nut and operate the car.

Setting the ignition timing of the VAZ-2107 in motion:

Remember that adjusting the advance angle may not be enough - often the carburetor itself needs to be adjusted. To do this, find a couple of screws. With one of them you regulate quality, and with the other you regulate quantity. Also clean the carburetor from time to time.

As can be seen from the described technique, setting up electronic ignition on the “seven” is not difficult. At the same time, you can count on serious savings, because at the service station this service will cost a considerable amount.

Why do you need proper ignition installation?

If the torque setting is incorrect, there will be both a decrease in engine output power and increased wear of the gas distribution mechanism, increased vibration, various malfunctions, increased detonation, and increased noise. The mixture does not burn immediately, but a detonation wave appears that hits the cylinder walls, causing vibration. The figure shows the combustion chamber of a VAZ engine at the moment of top dead center, when operating pressure is created, the valve reliably closes the chamber. 1 – normal combustion zone, 2 – mixture detonation zone.

Injector ignition

Often on forums there is a question about how to set the ignition on a VAZ-2107 with an injection engine. The answer in this case will be original - “no way.” The thing is that on a car with an injector, ignition adjustment is the task of the ECU. In this case, special sensors collect information. They determine the ignition timing, as well as other parameters, subsequently transmitting them to the main unit. All you have to do is ensure that the timing chain (belt) is properly tensioned. If problems do appear, the injector must be flushed and the failed components replaced.

Adjusting contact ignition

The operation involves the presence of a strobe light to adjust the ignition. Using a strobe light, a mark is placed on a moving flywheel or pulley. Due to the stroboscopic effect, the mark becomes motionless - this allows you to correctly adjust the ignition timing.

Schematic representation of a car's electrical circuit.

There are a wide variety of stroboscopes available on the market. The main difference between stroboscopes is the illuminator. There are two types of illuminators: LED or flash lamp. The LED illuminator is more compact, while the lamp illuminator provides brighter illumination.

There is an “old-fashioned way” of setting the ignition - using a standard 12V light bulb, a key size 13, a key to the crankshaft. It is necessary to solder the light bulb with wires to the contacts (even one is enough).

Do-it-yourself ignition installation on a VAZ 2107

If the car engine starts intermittently, the dynamic parameters of the car have decreased or fuel consumption has increased, most likely the VAZ 2107 ignition needs to be installed. These are the signs that indicate problems in the module. This is a mechanism that converts electrical energy into a spark. The procedure depends on the type of system implemented on your car: injector or carburetor. It is not difficult, even an inexperienced craftsman can do it with his own hands if he has the tools, understands the process and the design features of the module.

How to ensure that the installation and ignition setup procedure is completed correctly

Despite the fact that the procedure is not very complicated, not all people can perform it on their own. That is why, if you are not confident in your abilities, it is recommended to trust the installation and adjustment of the VAZ-2107 ignition (carburetor) to qualified specialists with experience. They know exactly how to carry out this procedure in a short period of time and at the same time achieve the desired result.

In general, similar services are provided at most service stations. Therefore, there should not be any problems with the issue of finding specialist services. It is recommended to give preference to professionals with experience. They will not only be able to carry out the work efficiently, but will also answer all questions that arise with great pleasure. By approaching this issue responsibly, no problems will arise in the performance of your vehicle.

https://youtube.com/watch?v=W2vxBE_fxAo

Some owners of classic cars of the VAZ 2101-07 family are constantly trying to improve, modify, add electronics and convenience. One of these improvements is the installation of contactless electronic ignition.

Tools you will need for your work

On a car with a carburetor, two ignition systems are used: contact and non-contact. In the first case, you need to prepare:

• strobe or regular 12V light bulb;
• open-end wrench 13;
• special wrenches for crankshaft

To install the contactless mechanism, you will need the following tools:

• Phillips screwdriver;
• keys for 8, 10 and 13;
• drill;
• self-tapping screws

Installing the ignition on a VAZ 2107 with an injector in the usual sense of this process is impossible, but you can check the module using a multimeter.

The cost of setting up the ignition of a VAZ 2107 at a car service center is quite affordable - on average 500 rubles as of February 13, 2022. But you will have to waste time and fuel traveling there and back. Therefore, the question of how to install this mechanism yourself is quite reasonable. Moreover, the whole procedure will take no more than half an hour.

Replacing and adjusting the distributor

We can say that this is the main element, since it is with its help that an electrical impulse is distributed to the electrodes of the spark plugs, and the moment when this needs to be done is also determined. On VAZ 2107 cars, and indeed on the entire classic series, to replace the distributor you need a wrench with “13” pliers. Remove all high-voltage wires from the cover and unscrew the nut from below. Pull out the washer and remove the entire distributor. But you will be hindered by the low-voltage wire, which will need to be disconnected using a “6” key or pliers.

Installing a contactless ignition on a VAZ 2107 is not much different from the procedure for adjusting a classic one. The advance angle is the most important parameter during engine operation. The correct operation of the motor depends on how accurately it is adjusted. The more accurately the angle is set, the lower the gasoline consumption, the higher the power, torque and engine life. If we are talking about setting up a classic system, then we can distinguish several stages:

1. Carrying out adjustments to the angle of the closed state of the breaker contacts.
2. Setting the normal ignition timing.

Please note that on VAZ 2107 vehicles, the ignition installation is performed slightly differently if the engine is equipped with an injection system. There, a control unit is responsible for supplying an impulse to the electrodes, which analyzes the operation of the engine according to many parameters read from sensors

All settings can be checked only during a test drive. You need to accelerate to 50 km/h, engage 4th gear and move evenly. Then sharply press the gas pedal - detonation knocks may appear for a couple of seconds, and the engine should gradually gain speed. The contactless ignition of the VAZ 2107 is configured in the same way, the only difference from the classic one is that there is no contact-type breaker in the circuit. The advance angle is adjusted by rotating the distributor body around its axis.

Procedure for operating a car with a carburetor

To set the ignition on a VAZ 2107, you do not need to create any special conditions. Work can be performed even outside during the cold season. Here is the ignition diagram for a car with a carburetor.

The sequence of operations on machines with contact and contactless modules is approximately the same:

1. Work must begin with a cold engine. First, remove the wires from the spark plugs.
2. Then the candles themselves are unscrewed. It's better to remove everything, so the crankshaft will move easier.
3. Now close the place of the spark plug on the 1st cylinder with your finger in order to feel when the compression stroke in the cylinder begins.
4. The key turns the crankshaft until the stroke begins.
5. Continuing the rotation of the crankshaft, the ignition of the VAZ 2107 carburetor is installed according to the marks.
6. Now you need to unclip the latches on the tumbler and check the direction of the slider. Its outer contact should be directed to the wire of the 1st cylinder.

Ignition systems for VAZ-2101-2107 cars

Contact ignition system

The contact ignition system consists of an ignition switch, an ignition coil, a distributor-breaker, spark plugs, low and high voltage wires.

Ignition distributor 30.3706

The ignition distributor converts low-voltage direct current into pulsed current and distributes high-voltage current pulses across the spark plugs. It is structurally combined with a chopper and centrifugal and vacuum ignition timing regulators.

The distributor is installed in the front of the cylinder block on the left side.

The distributor housing is cast from aluminum alloy. Two plain bearings are pressed into the housing shank, in which the roller rotates. A breaker cam is made on the top of the roller, and a centrifugal ignition timing regulator and rotor (runner) are also mounted. When the roller rotates, the weights of the centrifugal regulator diverge under the action of centrifugal forces and rotate the tetrahedral cam of the breaker at a certain angle in the direction of rotation of the roller. In this case, the contacts open with some advance, the greater the higher the engine speed. The rotation angle is limited by the size of the groove in the rotor support plate.

The breaker consists of a stand with a fixed contact and a movable contact with a textolite stop, which is pressed by a flat spring to the tetrahedral cam of the distributor roller. When the cam rotates, the contacts close and open. The cam is lubricated with a felt fold soaked in engine oil.

When operating a car, it is necessary to systematically check and adjust the gap between the breaker contacts.

The plate on which the breaker mechanism is mounted is mounted on a ball bearing, allowing it to rotate around the axis of the roller.

The plate is connected by a rod to the diaphragm of the vacuum ignition timing regulator. The vacuum (supplied through the hose from the rear throttle space of the carburetor) acts on the diaphragm of the vacuum regulator, and the rod rotates the breaker mechanism together with the movable plate relative to the tetrahedral cam, thereby ensuring optimal ignition timing depending on the engine load.

To reduce sparking between the contacts of the breaker, a capacitor is connected in parallel with them. It is fixed externally to the distributor housing.

The top of the distributor housing is closed with a cover with sockets for high voltage wires. A spring-loaded carbon is mounted inside the lid into its central electrode. A rotor with a contact plate (runner) distributes high voltage current to the spark plugs in accordance with the firing order of the cylinders (1 - 3 - 4 - 2). The ignition distributor shaft rotates clockwise (when viewed from above).

When adjusting the ignition timing, turning the distributor housing clockwise reduces the timing, counterclockwise increases it.

Ignition coil B-117A

The ignition coil is a step-up transformer that converts low voltage pulse current (12V) into high voltage current. The coil windings are installed in a housing made of thin galvanized steel. The housing cover is made of insulating material, has two low-voltage terminals and a socket for a high-voltage wire. The coil body is filled with transformer oil, which cools the windings.

The ignition coil is installed in the engine compartment and secured to the left mudguard of the body with two nuts.

Ignition switch

The ignition switch is a combined switch, consisting of a lock with an anti-theft device and a contact part, assembled in one housing. The switch is installed on the left side of the steering column in a special bracket and secured with two screws.

Spark plug

The spark plug ignites the working mixture in the cylinder with a spark discharge. The design of the candle is non-separable.

For a properly functioning spark plug, the color of the central electrode insulator skirt should be gray or light brown.

The car uses spark plugs A17DVR (A17DVRM) or their analogues.

Installation on a car with an injector

Manually setting the ignition of a VAZ 2107 injector using marks is impossible, since on such vehicles the adjustment is performed by the ECU (electronic control unit). It collects signals from sensors and, by comparing the readings of air flow, lambda probe, throttle valve and crankshaft position, determines the moment of spark formation. But if problems arise with the module, the motorist can independently check its performance. It is advisable to first familiarize yourself with the diagram.

The check is performed in the following sequence.

1. All wires are disconnected from the ignition.
2. The multimeter sets the maximum value to 20 kOhm.
3. Resistance is measured in pairs: 2 and 3, 1 and 4.
4. Performance indicators range from 3.6 to 4 kOhm. Any deviations indicate that the module is faulty and must be replaced.

How to install the ignition on a VAZ 2107 with a carburetor, watch this video:

About their device

Before finding out the importance of the elements of the ignition system in question, it is necessary to understand their structure. Structurally, the high-voltage wire consists of the following parts:

1. A conductor through which current flows.
2. Insulation - rubber or silicone is used as an insulating material.
3. Protective caps on both ends.
4. Metal contacts.

Each element performs corresponding tasks, and at the slightest violation of integrity, it will be necessary to replace it. Armored wires cannot be repaired, since they play one of the main roles in the car’s ignition system, and also belong to the category of consumables.

This is interesting! Few people know that on a car it is necessary to change not only the spark plugs, but also the armored wires, which wear out over time and begin to malfunction.

To a distributor or MZ
Read, it may come in handy: How to replace a pump with your own hands

It is a mistaken belief that armored wires on a car are ordinary wires that are designed to transmit current from a source to a receiver. As you know, VAZ 2107 cars were produced in two variations of the fuel supply system - carburetor and injector. Although many parts and mechanisms on the carburetor and injector are the same, this does not apply to the GDP. The carburetor VVP differs from the injection one on the VAZ 2107 in the following parameters:

1. The length, on which the amount of resistance also depends. The wires on the injection unit are shorter than on the carburetor.
2. Fasteners that connect to the distributor on the carburetor and the ignition module on the injector.
3. The amount of GDP. There are four of them on the injector, and five on the carburetor.
4. Type of caps.

Knowing the design differences, you must also understand that high voltage flows through the wire. The current comes from the distributor or MG through the wires to the spark plugs. The slightest malfunctions lead to the fact that current is not supplied to the spark plug, and a spark does not occur. If a spark does not occur, the cylinder does not work, which negatively affects the operation of the engine.

Let's summarize

The correctness of the work performed must be checked for the correct choice of the advance angle. To do this, you need to start the engine, if the engine starts without problems, accelerate the car to 45 km/h. At this speed, engage 4th gear and sharply press the gas pedal. If detonation occurs and lasts no more than 3 seconds, and disappears after acceleration, then the work has been completed correctly. If detonation does not appear, then you need to increase the angle, if it does not appear at all, reduce it.

Source

How to check early/late ignition?

To check the correct setting of early or late ignition, you need to do this while driving. To do this, you need to accelerate at 4th speed to 60 kilometers per hour and reset it to 40. Now sharply press the gas pedal and listen to the engine. If the angles are set correctly, a chirping sound will appear and disappear after a few seconds. The car should begin to pick up speed. With early ignition, detonation will not disappear for a long time, and with late ignition, it will not appear at all.

That is why you need to adjust the position of the distributor by loosening the nut to 13. If you cannot achieve the desired adjustment, proceed to the next step.

When should you turn on the ignition?

The first thing you should know is that there are no regulations for this operation, since the ignition timing is set or adjusted only if necessary. It may be caused by the following reasons:

1. You recently purchased a “Seven” on the secondary market and are trying to “bring it to mind.”
2. After engine repair, accompanied by its disassembly.
3. After unscrewing or removing the main ignition distributor (distributor), regardless of the reason why this was done.
4. When switching from high-octane fuel to gasoline with a lower octane number and vice versa.
5. After replacing the contact group or bearing in the distributor (in cars with an old ignition system).

Note. On VAZ 2107 vehicles equipped with an electronically controlled injector, the reason for checking the spark generation system may be the flashing of the Check Engine display on the instrument panel. True, it behaves in a similar way when a dozen more malfunctions occur. So ignition problems must first be diagnosed by contacting a service station.

In the vast majority of cases, the sparking moment is set as a result of a violation of the settings after disassembling or repairing the engine. A separate issue is the transition to high-octane gasoline, which requires ignition with greater advance, for which adjustments are being made.

It is advisable to check the timely formation of a discharge on the electrodes of the spark plugs in cases where unstable engine operation is observed, popping noises are heard in the carburetor and exhaust pipe, accompanied by an increase in fuel consumption. If you have not yet discovered the “gluttony” of the car, then pay attention to the color of the smoke; with high gasoline consumption, it is black, as is the carbon deposits on the electrodes of the spark plugs.

Ignition check

The ignition is controlled by controlling the distance between the switch contacts.

All VAZ cars have a common backlash indicator of 0.3 to 0.4 mm.

To measure the gap you need to use a special feeler gauge. If the measurement results do not meet the standards, it is necessary to loosen the adjusting screw and correct the gap.

It is also necessary to check the condition of the contacts and clean them. The contact group must be replaced if there are signs of wear.

Types of systems

For decades, while the VAZ 2107 model was produced (from 1982 to 2012), it was equipped with three types of ignition systems:

• mechanical with contacts - breakers;
• contactless;
• controlled by an electronic unit (ECU).

Contact ignition circuit installed in the first VAZ 2107 models

Note. The first 2 varieties were installed on the “seven” with a carburetor, the latter was introduced together with an injector.

In the mechanical version, the contacts opened by the cam of the distributor shaft break the low voltage circuit, initiating the formation of a powerful pulse in the secondary winding of the coil. This discharge is directed to the electrodes of the spark plug, which ignites the fuel in the cylinder where the piston has risen to top dead center (TDC) and the compression stroke is completed.

Scheme of non-contact ignition of the seven with a carburetor

The contactless circuit operates on the same principle, only the signal to break the circuit is supplied by the Hall sensor, and it is implemented by the switch. Therefore, setting the ignition on carburetor “sevens” is done almost identically. Another thing is cars with an injector, where a new system has been introduced that does not have not only contacts, but also a distributor and any moving parts. Here, the moment of spark formation is determined by the ECU controller, which is guided by the signals of various sensors.

Ignition system VAZ 2107 with injector

Video on checking the ignition module

It is important to set the ignition correctly after disassembling the power unit or removing the distributor without fixing the marks, otherwise you will not be able to start the car. This task is quite simple and does not require any deep knowledge or special tools. The main thing is to understand that a spark should appear in the 4th cylinder during the compression stroke and to catch this moment, acting according to the instructions.

Annotation on setting up the ignition system of the VAZ 2107 with your own hands

The Zhiguli “classic” VAZ 2107 does not belong to modern cars, manufactured with the latest technology and stuffed with sophisticated electronics. This is its beauty - there is no need to contact car service specialists for any reason; most of the car maintenance work can be done by the owner himself. This also includes the procedure for the ignition option, which anyone can perform, having previously studied the detailed instructions.

Preparatory stage

To set the ignition on a VAZ 2107 car, no special conditions are required; the operation can be done both in the garage and on the street, including in winter. For work, prepare the following set of tools:

• flat screwdriver;
• metal probe 0.35 mm thick;
• open-end wrench size 13 mm;
• a car light bulb designed for a voltage of 12 V with wires soldered to it;
• a wrench with a long handle designed to turn the crankshaft;
• key for unscrewing spark plugs.

Ignition tuning tool

Note. Instead of a special key to rotate the crankshaft, you can use a regular open-end wrench measuring 36 mm. If you don’t have such a key, then you will have to set the marks in the old proven way: by engaging 4th gear and raising the rear wheel, turn it manually, thereby turning the crankshaft.

Ideally, it is better to have in your arsenal a device for setting the ignition on a running engine - a strobe light. It is equipped with a lamp that flashes simultaneously with the moment of spark formation in the cylinder, which allows you to see the position of the notch on the crankshaft pulley at idle speed and clearly adjust the advance angle.

This is what a strobe looks like, which is convenient for adjusting ignition timing

Important point. The ignition is set in order to ensure that the spark appears in a timely manner and the engine starts, after which additional adjustments will be required. But the latter will not bring you the desired result when there is no compression in the cylinders or problems with the carburetor make themselves felt. If these faults are not eliminated, the engine operation will remain unstable, no matter how you configure the spark generation system.

Hence the conclusion: you can set the ignition correctly at any time, but to set it well - only on a working engine and carburetor.

Adjusting the gap of the VAZ 2107 distributor breaker

The quality of the spark depends on the distance between the switch contacts and the condition of the contacts themselves. To adjust the VAZ 2107 distributor, you need to do the following:

• tighten the fixing screw;
• loosen the screw securing the switch contacts;
• disconnect the mounting brackets and remove the distributor cap;
• unscrew the screws securing the slider;
• install and secure the slider;
• Clean the switch contacts with sandpaper (to avoid damaging the contacts, you must use sandpaper with a grit size of no more than 600).
• turn the adjusting screw to set the gap to 0.4mm using a suitable thickness gauge;
• secure the dispenser lid.
• remove cursor;

In addition to adjustment, repair of the VAZ 2107 distributor may be required. This consists of cleaning the contacts on the distributor cover or replacing the cover itself, replacing the slider, resistor or contact group.

US Postal Service » May 15, 2009, 01:31 pm

During the overhaul of the internal combustion engine, the chain with stars was changed. The timing belt was set according to marks: respectively on the crankshaft pulley, tooth and sprocket of the timing chain. But there was such garbage - put a mark on the bottom - you definitely won’t put the one at the top - it comes out a little to the right or to the left, but if you throw it over the tooth, it turns out to be quite good. How is this actually done correctly?

At first I thought that the ignition timing was definitely set on the computer - I went to the service station for diagnostics - they told me that the computer was supposedly flashed and they couldn’t configure anything using the tag - maybe Zizdat or they don’t know each other? As far as I remember, on the 409 engine it was controlled by the ECU

Tuning on carburetor modifications of the VAZ 2107

All old textbooks on servicing classic Zhiguli models describe a method for setting the moment of spark formation using a light bulb, although experienced motorists can easily do without it. You will understand why this happens as you read this material, but for beginners it will be useful to familiarize yourself with the old proven technique.

In order to check the performance of the carburetor or adjust its operation, it is recommended to read the following material: https://vazweb.ru/desyatka/dvigatel/remont-karbyuratora-vaz-2107.html

To correctly set the ignition of the “seven”, you need to ensure that the following conditions are met simultaneously:

• the notch on the crankshaft pulley is opposite the long mark on the timing cover;
• in this case, the round mark marked on the camshaft chain drive gear coincides with the boss on its body;
• the piston of the 4th cylinder has completed the compression stroke and is at top dead center;
• the contacts inside the distributor are open;
• The movable contact of the slider faces the fixed contact on the distributor cover, where the wire from the spark plug of the 4th cylinder is connected.

Note. On non-contact systems, at this moment the Hall sensor sends a signal to the switch to break the low voltage electrical circuit, which leads to the appearance of a high voltage pulse on the wire leading to the spark plug of the 4th cylinder.

The diagram shows what happens in the cylinders when the marks are aligned

The light bulb is used to control the ignition timing, for which it must be connected with one wire to the “K” contact of the high-voltage coil, and with the second to the vehicle ground. You should know that at the same moment the piston of the first cylinder is also in the TDC position, only there the air-fuel mixture is not compressed, but exhaust gases are released after its combustion. This is why ignorant car enthusiasts often confuse the first cylinder with the fourth when installing the ignition.

Layout of marks on the timing cover

When the above actions occur simultaneously, a spark discharge occurs on the electrodes of the spark plug of the 4th cylinder, as evidenced by the flash of the connected light bulb. To achieve these conditions and set the ignition correctly, follow the instructions:

1. Turn the crankshaft with a 36 mm wrench, aligning the notch on the pulley with the long notch on the timing cover.
2. If at this moment the engine valve cover is removed, then it is better to navigate by the mark on the camshaft gear, placing it opposite the housing boss.
3. Take the ignition distributor, remove the cover and turn its shaft to place the slider opposite the wire leading to cylinder No. 4 (there are cylinder number markings on the cover). Insert the distributor into the engine hole, holding the slider and housing in this position, and then secure it with a 13 mm wrench nut.
4. Connect the light bulb wires and turn on the ignition by turning the key. Loosen the nut securing the distributor and slowly turn it by the housing until the lamp flashes, indicating the moment of sparking. Reattach the distributor.
5. Turn off the ignition and make sure that the contacts inside the distributor are currently open. Take a 0.35 mm feeler gauge and check the gap between them, if necessary, adjust it by loosening the fastening screws with a screwdriver.

The marks must be aligned by turning the crankshaft with a wrench

Note. The instructions imply that before starting work the distributor was removed from the engine without aligning the marks.

The ignition is considered to be set correctly if, after installing the distributor cap and connecting the wires, you manage to start the engine, and then you need to adjust the timing. The non-contact system is installed in the same way, with the exception of checking the gap in the contact group due to its absence.

The mark on the camshaft gear is aligned with the boss on the body

Important point. In most cases, the ignition is set without removing the valve cover, which is why the position of the mark on the gear is not visible. You have done everything according to the instructions, but the engine does not start. This means that a spark is supplied to the 4th cylinder during the exhaust stroke, and compression at this moment occurs in the first cylinder. The problem can be solved simply:

• remove the distributor cover;
• unscrew the nut securing it;
• pull the distributor out of the socket, turn the slider exactly 180° and insert the element back;
• Press the distributor skirt with the nut and install the cover.

Advice. If the engine does not start after these steps, but begins to show signs of life, then the problem lies not in the ignition setting, but in a malfunction of one of the system elements.

Photo instructions for setting up

Video about correct ignition installation

What is ignition timing?

For the ignition to work correctly, the following condition must be met: sparking must occur at the moment when the piston is at TDC. This should be a compression stroke. This moment should be the flash point.

However, that's not all. The time it takes for the fuel mixture to completely burn must also be taken into account. Therefore, the spark plugs must create an impulse with some advance, which is called the advance angle. As a result, the mixture reaches the peak of combustion, and the cylinder begins to move downward.

If sparking occurs earlier, then such ignition is called earlier, and if late, then later. Early leads to detonation. This is why the engine quickly overheats and becomes inefficient, although fuel consumption can sometimes be greatly reduced. This can be determined by the spark plug electrodes, which are covered with a white coating. With late ignition, power is noticeably lost, and black smoke comes out of the exhaust pipe, which indicates that gasoline, without having time to burn in the cylinder, burns out in the exhaust system.

The spark plugs, in this case, turn black. Popping noises in the exhaust pipe can also tell this. Late ignition means that the spark plugs are simply flooded with fuel, which does not burn or burns incompletely. When they are flooded, they do not work.

Ignition systems are divided into 3 groups:

Electronic ignition system (microprocessor ignition system)

Electronic ignition system

Pros and cons of contactless ignition

Pros and cons of contact ignition

Checking and adjusting the lead angle

To check whether the ignition is set correctly, just align the marks on the crankshaft pulley and the timing cover. In this case, the slider should be directed to the 4th cylinder, and the contacts should be open. If the slider “looks” towards the first cylinder and the car does not start, then turn it 180° as described above.

To create optimal fuel combustion conditions in the chamber, the flash should occur a little earlier than the piston reaches TDC. There are 3 ways to achieve this:

• when installing the ignition, align the notch on the pulley not with the first long mark, but with the second, indicating an advance angle of 5°;
• determine the amount of advance “by ear” by loosening the nut securing the distributor and turning it by the housing at idle engine speed;
• connect a strobe light to the system, start the engine and by turning the distributor, adjust the position of the notch by pointing the flashing lamp of the device at it.

The advance angle is adjusted by turning the distributor housing

Reference. The second method is most often used by experienced drivers, since it gives a positive result without any instruments. The ignition distributor is turned until the position of the most stable engine operation is found. That is why the use of a light bulb does not play a big role, because the real advance angle at which the engine operates in optimal mode lies in the range of 5-10° and is determined individually in each car experimentally.

Once the settings are complete, press the gas pedal sharply several times. If you can hear the piston pins knocking (a ringing sound is clearly audible from the engine), then the advance angle is too large. Loosen the distributor and turn it 1-2° clockwise, then check again by pressing the accelerator.

Advice. Finger tapping is often heard when you fill with low octane fuel. Then it is necessary to reduce the advance angle so that detonation (which causes knocking) does not destroy the piston group. When using high-quality fuel, the angle should be increased in order to improve the dynamic characteristics of the VAZ 2107.

Carburetor

There are a large number of strobe lights on the market, but in general their operating principle is equally suitable for ignition installations. The price only affects the service life of this device. The strobe light operates while the engine is idling. The ignition is adjusted by aligning the marks on the crankshaft pulley with the scale on the timing cover. The matching of signs is assessed using a stroboscopic light beam.

When using a VAZ 2107 with 92 or 95 gasoline, the average mark of the scale should coincide with the pulley mark. In case of deviation, the ignition angle must be adjusted by turning the distributor housing. When turning the distributor clockwise, the advance angle increases, and when moving in the opposite direction, it decreases.

How to set the ignition on a VAZ 2107 with an injector?

The ignition system of the “Seven” with direct fuel injection operates under the control of an ECU that receives signals from the following sensors:

• crankshaft position;
• air flow;
• throttle position;
• lambda probe.

Multimeter for checking the ignition module

Based on the readings of these sensors, the controller itself determines the moment of spark formation, so the system is not configured in the usual sense. If any problems occur, the driver can only independently check the functionality of the ignition module, to which the high voltage wires from the cylinders are connected. To do this, you need to take a multimeter (ohmmeter) and perform the following steps:

1. Disconnect all wires from the module.
2. Set the maximum measurement value on the multimeter to 20 kOhm.
3. Measure the resistance between the following pairs of terminals: 1 and 4, 2 and 3.
4. If the measurement results fall outside the range of 3.6-4 kOhm, then the module is faulty and must be replaced.

The seven with an injector has an ignition module, which you can check yourself

Diagnostics of malfunctions of the ignition module of injection VAZ 2107

The injection ignition of the VAZ 2107 is completely electronic and is considered quite reliable. However, there may be problems with this. The module plays an important role in this.

Signs of a malfunctioning ignition module

Symptoms of a faulty module include:

• change in sound and color of exhaust;
• engine interference;
• the Check Engine warning light on the dashboard lights up;
• floating minimum;
• increased fuel consumption.
• dips and jerks during acceleration;

However, these signals may appear due to other malfunctions, for example, a malfunction of the fuel system, as well as the failure of some sensors (oxygen, mass air flow, detonation, crankshaft position, etc.). If the engine starts to operate incorrectly, the electronic controller puts it into emergency mode, using all available resources. Therefore, when the engine operation changes, fuel consumption increases.

In such cases, you should first of all pay attention to the controller, read the information from it and decipher the error code that occurred. To do this, you will need a special electronic tester, which is available at almost all gas stations. If the ignition module fails, error codes in engine operation may be as follows:

• P 0352 – break in the winding or windings of the coil responsible for 2-3 cylinders.
• P 0351 – break in the winding or windings of the coil responsible for cylinders 1-4;
• P 3000 - no spark in the cylinders (for each of the cylinders the code may resemble P 3001, P 3002, P 3003, P 3004);

Design and principle of operation of the BZ

Contactless or electronic ignition on the VAZ 2107 is installed on models with injection engines. Carburetor sevens were supplied from the factory with contact ignition systems, which have many disadvantages. If you plan to install a contactless ignition module, then before starting it won’t hurt to understand the issue of its design.

The ignition system is the mechanism by which a pulsed voltage is created to supply the spark plugs in order to promptly ignite the fuel-air mixture in the cylinders. The main disadvantage of contact SZ is that the contact groups require regular cleaning, replacement and adjustment. As soon as difficulties arose with igniting the combustible mixture, the car owner immediately knew where to look for the reasons.

With the advent of the BSZ, these difficulties automatically disappeared. To understand why, let’s look at the components of the mechanism:

• Electronic type switch with transistors.
• Double winding coil.
• A distributor or distributor equipped with a Hall sensor, a slider and a contact cover.
• Spark plugs with armored wires.

The BSZ diagram for the VAZ 2107 is shown in the photo below.

Ignition circuit for VAZ 2107

Based on this diagram, let's consider the principle of its operation:

1. When you turn the ignition key, current is supplied to the primary winding of the coil, thereby creating a magnetic field.
2. When the engine starts, power is supplied to the starter coil and the rotor begins to turn the crankshaft.
3. In this case, the crankshaft rotates the distributor shaft, which is connected to the runner.
4. As soon as the shaft with the slider rotates, this phenomenon is detected by the Hall sensor (along the protrusion on the shaft) and transmits the corresponding signal to the switch.
5. When a signal arrives at the switch, the primary winding of the coil is de-energized (on the low-voltage side).
6. A powerful discharge of about 25-30 kV is induced in the secondary (high-voltage) winding, transmitted to a moving contact located at the end of the distributor shaft.
7. When the slider moves in a circle, it practically touches the contacts in the cover, a spark occurs between them, and a high voltage discharge is transmitted to each of the contacts in turn.
8. This discharge flows through armored cables to the spark plug electrodes.

Pros and cons of the system

If you decide to install a carburetor-type BSZ on a VAZ 2107, then it is recommended that you first understand all the advantages and disadvantages of the device. The advantages of the mechanism under consideration include:

1. The absence of contacts automatically eliminates the need for their maintenance. As a result, we have a more reliable system that does not require frequent maintenance.
2. Stability of spark propagation through the cylinders, which is due to the absence of the breaking effect of the contacts using the cam method.
3. A large discharge in the spark plug, the value of which reaches 25-30 kV, while in contact modules it does not exceed 12 kV. High voltage promotes a stronger spark and improved ignition of the fuel assembly, as well as its complete combustion.
4. Simplified engine starting at low temperatures.

How to set the seven on a carburetor

The VAZ 2107 traces its origins to the Fiat 124 and was produced in Russia until 2012

Installation Tools

For all work carried out we will need:

• key to 38;
• open-end or socket wrench 13;
• a 12 V control light with two wires attached to it (each wire is approximately 20 cm long).

The key for turning the crankshaft is designed for more careful alignment of the marks

How to work with tags correctly

There are three marks on the engine block next to the crankshaft pulley, each with its own length. You can feel these marks from the driver's side, but only strictly with the engine not running, since the pulley rotates at high speed when the engine is running! The shortest of them will mean that the ignition is advanced by 10 degrees or 10 degrees to the top dead center of the piston in the cylinder, the middle mark by 5 degrees and short - 0 degrees. You can also feel the slot on the pulley, and even on a VAZ 2107 (carburetor) this mark is sometimes implemented differently, but the main task is to find it.

Ignition timing marks

Step-by-step description with photos and diagrams

1. If during the work you accidentally messed up the ignition setting, then do not rush to remove the valve covers to understand when the compression stroke begins. Do the following: remove the spark plug in the first cylinder and plug the hole with a small, tight plug made from a rag soaked in water. Having made sure that no one is standing nearby and will not be harmed by the impromptu plug flying out, in short series we turn the crankshaft with the starter for literally a split second, turning the starter on and off, and at the moment when the plug flies out with a characteristic sound from the spark plug hole, we stop turning the starter.
2. Now, turning the crankshaft a little at a time by the pulley nut with a 38 wrench, we ensure that the marks on the pulley and the cylinder block coincide with the middle mark, which means 5 degrees.
3. We unhook the latches from the distributor cover and look at the direction of the slider: when it is positioned as in the photo, then half the job is already done. If not, then use an open-end wrench or a 13-socket wrench to unscrew the nut, remove the distributor and put everything back in the required position.

Required position of the distributor and slider relative to the cylinder block

For ease of ignition settings

Video about setting up a VAZ 2107 (carburetor)

Spark plug

Plugs are used to ignite the fuel-air mixture in the engine cylinders when high voltage is supplied from the ignition coil. The main elements of any spark plug are a metal body, a ceramic insulator, electrodes and a contact rod.

Checking spark plugs for VAZ 2107

There are many ways to check spark plugs. The most popular are the following algorithms.

Video: checking spark plugs

Selection of spark plugs for VAZ 2107

Various models of spark plugs are installed on VAZ 2107 carburetor and injection engines. In addition, the parameters of the spark plugs depend on the type of ignition system.

Auto stores offer many types of spark plugs for the VAZ 2107, differing in technical characteristics, quality, manufacturer and price.

Table: characteristics of spark plugs depending on the type of VAZ 2107 engine

You can install spark plugs from various manufacturers on VAZ cars.

Table: manufacturers of spark plugs for VAZ 2107

Installing the "Start" button

Some car enthusiasts install a separate button in the car in a convenient place to start the engine. It is connected to the starter circuit by breaking the red wire going to terminal 50 on the ignition switch. The car is started as follows:

In this case, you can turn off the engine only by turning the key in the opposite direction.

In order to use a button to stop the motor, that is, to turn it into a “Start-Stop” button, you need to use two additional relays:

When you press the button, current from the battery goes to the headlight relay, closing its contacts, and then to the starter. When the engine starts, the button is released, opening the contacts of the starter relay and breaking its circuit. However, the positive wire remains connected through the headlight relay for some time. When you press the button again, the headlight relay contacts open, breaking the ignition circuit, and the engine stops. To delay the activation of the starter, an additional transistor is included in the circuit.

Thus, even a novice car enthusiast can replace the ignition switch of a VAZ 2107. To do this, you need a minimum set of tools and following the recommendations of specialists

Particular attention should be paid to the correct connection of wires to the lock contacts

Source

High voltage wires

High voltage wires (HVW) transmit impulses from the coil to the spark plugs. Unlike other wires, they must not only withstand high voltage, but also protect other parts of the car from it. Each wire consists of a conductor with a metal tip, rubber caps on both sides and insulation. The serviceability and reliability of the insulation is of great importance, since it:

Malfunctions of high-voltage wires

The following main malfunctions are characteristic of GDP:

If the VV is damaged, the electrical contact is lost and a discharge occurs, leading to voltage loss. In this case, the spark plug receives not the rated voltage, but an electromagnetic pulse. Faulty wires lead to improper functioning of some sensors and interruptions in the operation of the power unit. As a result, one of the cylinders stops performing useful work and runs idle. The power unit loses power and begins to detonate. In this case, they say that the engine is “troubling.”

Diagnostics of high-voltage wires

If you suspect a malfunction of the engine (the engine is “troubling”), they must first be carefully inspected - damage to the insulation, chips, or contact with hot engine elements is possible. Particular attention should be paid to the wire contacts - there should be no traces of oxidation or soot on them. If no visible damage is found, proceed to detect a possible break and measure the resistance of the GDP using a multimeter. The wire resistance should be 3–10 kOhm. If it is zero, the wire is broken. It should also be taken into account that the resistance should not deviate from the norm by more than 2–3 kOhm. Otherwise, the wire should be replaced.

Selection of high voltage wires

When purchasing new wires, you should pay attention to the car manufacturer's recommendations. The VAZ 2107 is usually equipped with VPPV-40 (blue) wires with distributed resistance (2550 +/-200 Ohm/m) or PVVP-8 (red) with distributed resistance (2000 +/-200 Ohm/m). An important indicator of GDP is the permissible voltage. If the actual voltage values ​​exceed the permissible values, breakdown of the cable insulating layer may occur and the wire may fail. The voltage in a non-contact SZ reaches 20 kV, and the breakdown voltage is 50 kV.

The material from which the GDPs are made is also important. Typically the wire has polyethylene insulation in a polyvinyl chloride sheath. Silicone GDPs are considered the most reliable. They do not become rough in the cold, which prevents them from loosening in their nests, and are less prone to breakdowns. Wire manufacturers include Champion, Tesla, Horse, and others.

Ignition coil

The ignition coil acts as a step-up transformer, increasing the voltage from 12 volts to 24 kilovolts or more. In VAZ 2107 cars with contactless ignition, a coil of type 27.3705 is used. All carburetor Samaras were equipped with the same transformers.

The ignition coil increases the on-board voltage to several kilovolts to form a spark that ignites the fuel mixture in the combustion chamber

Table: technical characteristics of transformer coil type 27.3705

Coil location

In the "sevens" the ignition coil is installed in the engine compartment on the left. Usually it is mounted on a special bracket under the expansion tank. Sometimes car owners move the coil to a safer place, for example, on the engine shield, to protect it from moisture and process fluids. You can find the coil by the central high-voltage wire that connects it to the distributor cover.

Four high-voltage wires from the distributor cover go to the spark plugs, and the central one goes to the ignition coil

Coil malfunctions and their symptoms

Of all the components of the ignition system, the coil is considered the most reliable component. Its resource is unlimited, but it happens that it also fails. The main causes of transformer malfunction are burnout or short circuit in the windings. If this happens, the spark disappears altogether, because voltage is no longer supplied to the distributor.

Methods for checking the ignition coil of a VAZ 2107

There are two methods to check the coil for performance: rough and fine. In the first case it is necessary:

1. Disconnect the end of the center wire from the distributor cap and insert a known good spark plug into the end.
2. Place the wire with the spark plug so that the skirt of the spark plug touches the ground of the car.
3. Have an assistant sit behind the wheel and turn the starter.

If the coil is working properly, sparking will be observed between the electrodes of the spark plug.

Pay attention to the spark itself. It should be stable and have a light blue tint.

If there is no spark, it is necessary to make a more accurate diagnosis, since not only the coil, but also the switch, the Hall sensor, and the ignition switch may be to blame.

To accurately check the coil, you will need an ohmmeter or multimeter with a resistance measurement function. The verification procedure is as follows:

1. Using a 13 mm wrench, unscrew the nuts securing the coil to the bracket. We disconnect all the wires from it and remove it from the car.
2. We clean the body from dirt and dust.
3. We turn on the ohmmeter in the measurement range of 0–20 Ohms.
4. We connect the probes of the device to the side terminals of the coil (low voltage winding terminals), look at the readings. They should be in the range of 0.45–0.5 ohms.
5. To check the integrity of the secondary winding, connect one ohmmeter probe to the central terminal, and the second to the terminal marked “+B”. We switch the device to the range of 0–20 kOhm and look at the readings. The working coil's secondary winding resistance should be in the range of 5–5.5 kOhm.

If the device readings differ from those indicated, the coil must be replaced.

Timing phases and when to set them according to marks

Valve timing refers to those moments at which the piston in the engine moves up and down over a certain interval. When irregularities in the valve timing occur, the pistons move incorrectly along the interval, resulting in uneven engine operation on the VAZ-2107.

If the driver notices that the car’s power decreases, fuel consumption increases, and engine interruptions occur, then it is necessary to resort to setting the valve timing according to marks. How to set marks on a VAZ 2107 carburetor and injector, we will learn from this material, since the design of the timing mechanism is identical.

How to set timing timing marks

The procedure involves performing the following manipulations:

1. The VAZ 2107 needs to be placed on a hard surface, with chocks placed under the wheels and the hand brake pressed all the way. The gear shift lever must be set to neutral mode.
2. The cover is removed from the cylinder head by first unscrewing all the fixing nuts to “10”. It is better to replace the gasket with a new one, even if the old one shows no signs of damage.
3. Using a key set to “24”, you need to turn the crankshaft on a VAZ 2107 car. This is done in order to be able to align the marks on the moving and stationary parts of the mechanism. To carry out these actions, it is recommended to use good lighting or use a flashlight. The crankshaft rotates until the mark on the pump and generator drive belt pulley coincides with the long mark marked on the block.
4. Combining these risks, the mark on the sprocket should eventually coincide with the ebb on the camshaft bed. If the mark ends up at the bottom, then you should rotate the crankshaft 360 degrees.
5. If you can’t make sure the labels match, then proceed to the next steps, which are described below.
6. The crankshaft is rotated until the marks on the star and the bed ebb align.
7. Using the key at “13”, you need to loosen the tensioner. The 2 nuts securing the tensioner are unscrewed, after which this device is removed.
8. The bolt that secures the sprocket to the camshaft is unscrewed. To do this you will need to use the key at “17”.
9. The sprocket is removed, after which it must be rotated until the marks on the VAZ-2107 timing belt pulley coincide with the long mark on the block. The star fastening bolt does not need to be unscrewed, since after removing the tensioner the camshaft star rotates.
10. We put a chain on the sprocket, if it was decided to unscrew it, and install it in place. Finally, the tensioner is installed, for which you should tighten it with 2 nuts to “10”. You can install the tensioner first, but later you will need to use a crowbar or pry bar to get the sprocket into place. Finally, screw the tensioner nut to “13”.

This relative arrangement of the parts allows the piston of the 4th cylinder to be positioned at top dead center TDC.

Features of servicing the timing mechanism

After the timing marks are installed on the VAZ-2107, you need to perform the following actions:

• The timing chain of the VAZ-2107 is being tensioned.
• Adjusting the valves, or more precisely, the thermal gap between the camshaft cams and the rocker arm.
• Setting up the ignition system.

The process of adjusting the valves on the VAZ-2107 is carried out according to the following scheme: initially 6 and 8 valves are adjusted, the report must be carried out from the radiator. After they are adjusted, you need to start adjusting valves 4 and 7, then valves 1 and 3, and finally valves 2 and 5.

How to adjust the valves on a VAZ-2107 car can be found out in more detail in the relevant material on this site. In conclusion, it is worth noting that VAZ-2107 cars are one of the most reliable vehicles, the production of which began back in the 90s.