Do-it-yourself diagnostics, adjustment and repair of the VAZ 2106 carburetor

A carburetor is a component that prepares the fuel mixture for the engine. Its task is to ensure the correct proportions of mixing air with gasoline. The ideal ratio is: 1 portion of gasoline per 15 portions of air. During operation, the adjustment of the VAZ 2106 carburetor gradually gets lost, which leads to excessive enrichment or depletion of the fuel mixture with gasoline. On the VAZ 2106, the manufacturer installed an “Ozone” carburetor produced by the Dimitrovgrad Automotive Assembly Plant (DAAZ). The operation of the device is based on the principle of jet propulsion. A powerful jet of air through the jets located in the diffuser carries fuel from the float chamber. As a result, a fuel-air mixture is formed in the proportions necessary for its ignition in the combustion chamber.

Table: calibration data for the Ozone carburetor

Any deviation in the composition of the fuel-air mixture from the optimal one affects engine performance. It becomes difficult to start a cold and warm engine, its operation at idle and in operating mode is disrupted, and acceleration dynamics deteriorate.

DIY repair

If your carburetor suddenly becomes unusable, do not throw it away

Repairing this important “organ” of the car involves replacing faulty parts as quickly as possible. In order to determine which parts need to be replaced, you should disassemble, clean the carburetor and carefully inspect the component mechanisms

How to remove a carburetor

The carburetor is removed if a malfunction is detected in it, but there is no way to do this by partial disassembly. The carburetor is also removed to replace, adjust and clean it.

It is removed as follows:

1. To begin with, all kinds of hinged parts and damper drive cables are removed.
2. The air filter housing is removed from the studs. To do this, you need to unscrew all the nuts that secure it to the carburetor. The clamping nut is pulled back and the choke cable sheath is pulled out from the mounting bracket.
3. The outer surface of the parts is cleaned of dirt.
4. The choke drive cable is loosened and the fuel supply and crankcase gas exhaust hoses are removed.
5. The hose between the economizer and the pneumatic valve and the hose of the vacuum ignition distributor are disconnected.
6. Then the nuts that secure the carburetor to the intake manifold are unscrewed.
7. The carburetor body is removed and the intake manifold hole is plugged with a clean rag to avoid clogging.

Don't forget to check the integrity of the sealing gasket, which is located between the carburetor and the intake manifold. Replace it if necessary.

Photo gallery: removing the carburetor from a VAZ

How to clean a carburetor

Before you start cleaning the carburetor, you need to carefully prepare: buy a special aerosol cleaner at a car shop, arm yourself with smooth, dry cloths, a tire inflator, remove the carburetor and disassemble it.

Cleaning the jets

Jets—fuel and gas supply channels—are cleaned with compressed air or a liquid cleaner under pressure. Mechanical cleaning with any fleecy or metal objects is prohibited.

When cleaning the jets with compressed air (you can use a tire pump for this), the body of the idle jets, the main metering system (air and fuel), then the valves and channels of the pump sprayer are blown out.

In case of severe contamination, the jets are placed in acetone so that the deposits soften or completely dissolve. Then they should be blown out.

Table: jet calibration values

Flushing the float system

To get to the carburetor float system, you must:

1. Remove the air filter and fuel hose clamps.
2. Disconnect the cable that controls the starting device.
3. Remove the electrical connector on the solenoid valve.
4. Then unscrew the fastening bolts and, without turning over, remove the carburetor cover.

It is best to clean the float compartment with a rubber bulb, carefully drawing out any remaining fuel from the chamber. You should not use fluffy rags - they can accidentally clog the jets.

To complete the cleaning, you can wipe the bottom of the float chamber with a stiff brush.

To check how well you have cleaned the float chamber, you need to unscrew the air jets and blow out the emulsion wells. If dirt appears in them, washing should be repeated and checked in the same way.

Flushing the throttle valve

It is produced using a cleaner, which can be purchased at a specialized auto store.

The throttle valve itself is washed, as well as all accessible elements, channels, valves, etc.

Particular attention should be paid to the forced crankcase ventilation channel, because

it gets clogged more often and more severely than other parts. After this, the idle speed sensor is unscrewed and the internal elements are washed. The procedure is repeated again.

Video: how to clean the throttle valve on a VAZ

Replacing the gasket

The gasket is located between the carburetor body and its cover. If during disassembly you find any damage to the gasket, it should be replaced.

This is not so difficult to do - you just need to dismantle the float and put a new one in place of the old unsuitable gasket. Then install the float and put the carburetor cap back.

Signs of malfunction of the VAZ 2106 carburetor

The main symptoms of a non-optimal mixture composition are: • difficulty starting a cold engine; • unstable operation of the engine at idle; • dips when pressing the accelerator pedal; If the carburetor begins to produce a rich mixture, you will understand this by the following signs: • Fuel consumption increases • Loud exhaust is heard in the muffler and the smoke turns black If the engine receives a lean mixture, you will understand it by the following sign: • Loud pops are heard from under the hood . In both cases, the engine heats up noticeably more, and its power is also lost.

If you encounter a similar problem, remember that it is a natural consequence of using the carburetor. Any element of the car requires care, regular inspection and maintenance. Therefore, the VAZ 2106 carburetor must be adjusted from time to time. Before proceeding with the adjustment, you need to make sure that the cause of the breakdown is not the failure of any element inside the device. You need to disassemble it, wash it and clean it. And only after you are convinced that all components of the structure are in full working order, you can begin adjustment. The easiest option is to send the car to a specialist. Carburetor technicians have a special tool - a gas analyzer. Using this device, you can achieve the most efficient system setup. However, the services of specialists in this profile are not cheap. You may want to do all the work yourself, using available materials. Next we will look at how to set up a carburetor step by step.

If not the valve, then what?

Dirt, low-quality fuel, malfunction of the ignition system - all this separately and in the compartment can affect the idle speed disappearing or becoming unstable. If you have already decided to carry out a full diagnosis, then start with the filters - air and fuel.

If they are heavily clogged, then gasoline or air (these are the main components of the air-fuel mixture) will not enter the carburetor normally. To be more precise, they will hit, but only after overcoming great resistance. And don't forget about the thimble-shaped filter that is installed at the inlet of the carburetor.

Adjusting the carburetor drive of the VAZ 2106

1. Check the length between the tips. The required size is 80 millimeters. 2. If you deviate from this size, remove one tip.

3. Loosen its lock nut and by rotating adjust the distance to the desired size.

4. Tighten the nut and return the rod.

5. You need to check the adjustment. To do this, our assistant presses the gas pedal. We observe the throttle valve to see if it has opened completely.

6. If not, then you need to remove the tip from the lever and reduce the length of the rod.

7. Now you need to see what position the damper is in when the gas pedal is released: does it close completely. If not, the pull needs to be lengthened a little. 8. Next we work with the air damper. We weaken its drive. In the cabin, we completely recess the damper. 9. Press the three-arm lever so that the damper opens completely. In this position, tighten the locking screw.

10. Check the adjustment. To do this, we completely close and open the door from the passenger compartment again. If the damper has not opened completely, we carry out the adjustment again. If the outcome is positive, fully tighten the screw.

Correct selection

Fans of tuning VAZ classics and simply wanting to improve its performance characteristics most often opt for Solex

.
Initially, models from front-wheel drive cars DAAZ 2108 and 21083
. It is impossible to install them on classics without minor modifications. Let's look at such work in more detail. When choosing a device for your car, you need to take into account the engine displacement. For engines with a volume of 1.3 liters, the DAAZ 2108 fits well, and for 1.6 - the DAAZ 21083. These devices differ in the diameters of the cross-sections of the diffusers, as well as the fuel and air nozzles. To install any of these models on a classic engine, you must additionally prepare the following components. A new set of gaskets for the carburetor, a piece of hose to ensure its heating, a tee to the fuel system, a valve and a set of rods for the gas pedal. To get the most out of this undertaking, it would be advisable to replace the ignition system with an electronic one. Now let's look at the procedure for installing the carburetor:

• On a cold engine, you need to remove the standard device along with the gaskets;
• The next step is to install new gaskets. The first is paronite, then plastic and then cardboard on top;
• A new Solex is placed on top of these gaskets, but the fasteners are not yet clamped;
• Under the nuts closest to the engine on the carburetor, place a bracket from a set of rods for the gas pedal;
• The double-arm pedal drive lever, which is removed from the valve cover, should be placed on the bracket;
• The rod on it, the one that is shorter, is replaced with a new one from the purchased kit, and if necessary, the length is adjusted;
• The pedal return spring should be placed closer to it;
• Now you need to ensure heating of the device; to do this, connect it to the outlet pipe on the intake manifold.

Adjusting the carburetor damper OZONE VAZ 2106

The following step-by-step photo instructions will help you understand the adjustment process:

We adjust the VAZ 2106 carburetor starter

These works can be performed directly in the car. But you will have to first remove the filter cover. 1. Turn out the plug. Underneath we find the adjustment screw.

2. If you carry out the work without removing the carburetor from the car, pull out the choke. If you have the device in your hands, press the three-arm lever. After the damper is completely closed, push the rod down until it stops.

3. We look at the gap between the camera and the air damper. A 5.5 mm drill will help us with this.

4. If necessary, make adjustments by turning the adjusting screw using a screwdriver.

5. Return the cork back. 6. Now you need to check the distance between the camera and the throttle valve. The required size is 1 millimeter. A drill with a similar diameter is suitable for this. The gap is adjusted using a rod, which is either rearranged into a different hole or bent.

Common causes of carburetor failure and their solutions

If one of the system elements in the carburetor fails, you may not notice it immediately. Failures appear gradually. Often, unstable idle speed is explained by a failed solenoid valve. Not all carburetors have such a device.

To test the solenoid valve, you will need to disconnect the wire connected to it. A positive contact is supplied to it from the battery. Correct wiring is indicated by a slight click.

You need to check the voltage on the wire that connects to the solenoid valve. If there is no voltage in the line, the wiring has failed. It will be necessary to completely replace the network from the ignition switch to the solenoid valve.

Unstable speed can also be observed when the spark plug electrodes are covered with a large layer of soot. The spark power is insufficient. It cannot ignite the fuel mixture. The poor condition of the spark plugs is due to incorrect carburetor settings. In this case, it supplies too much fuel to the combustion chamber.

The cause of this malfunction may be a burnt-out intake valve. It is responsible for the amount of fuel that is supplied to the combustion chamber of the engine. To ensure this, you need to adjust the carburetor. If this does not help, the inlet valve will need to be replaced.

Adjusting the carburetor float OZONE VAZ 2106

Before you begin this work, you need to make sure that the needle valve is working reliably. 1. Take a measurement between the float and the gasket. This distance should be 6.5 millimeters. A slight deviation of 0.25 millimeters is allowed. You can also simply use a suitable drill bit to measure.

2. The clearance is adjusted by changing the angle of the float tongue.

3. Turn the float all the way. We measure the distance to the gasket in this position. It should be equal to 8 millimeters. Using the tongue we achieve the desired value.

Setting the gasoline level in the float chamber

To adjust the float in the DAAZ carburetor, the entire assembly itself does not need to be removed, but partial disassembly is necessary. To carry out adjustment work, perform the following steps:

• turn off the engine, open the hood;
• dismantle the air filter cover (unscrew three nuts);

• remove the filter housing itself (four more nuts);

• disconnect the choke cable;
• remove the telescopic rod of the starting device;

• unscrew the five screws securing the carburetor cover (they need to be carefully removed and reassembled, it is important not to drop the fasteners into the manifold);
• for ease of operation, disconnect the fuel supply hose;

• turn the lid over and determine the gap between the float and the cardboard spacer, it should be within 6-6.5 mm;
• if the gap differs from the required value, we make the adjustment by bending the tongue;
• It will also be necessary to align the float itself on a plane; it may be beveled relative to the surface of the cover.

Adjusting idle speed on a VAZ 2106

First you need to prepare the car. We warm up the engine to a temperature of 90 degrees. We ensure that the engine operates stably at idle speed.

1. Using the quantity screw, we achieve a crankshaft speed of 820 to 900 rpm. 2. Using the quality screw, we bring the unit into stable and uniform operation. Then, by tightening the screw, we destabilize the operation of the motor and unscrew it again to restore it. Our task is thus to achieve the most stable operation of the engine with the leanest possible mixture. 3. Using the quantity screw, we again bring the speed to the desired value. 4. It is best to carry out the operation two or three times.

Carburetor diagnostics after adjustment

Now you need to make sure that all settings are set correctly. To do this, you need to start the engine and watch it idle. Is he starting to triple? Next, press the accelerator sharply and also sharply release it. Can you hear any dips? If yes, the fuel quality adjustment screw needs to be unscrewed a little. During heavy braking, the engine should continue to operate stably. If it stalls, you need to slightly unscrew the quality screw. Thus, you now know how to adjust the carburetor on a VAZ 2106 on your own without special tools. Experienced carburetor technicians! If you find inaccuracies in the article and want to share your experience, write your comments. Your opinion will be very useful to all readers of the site. Sixes are often equipped with DaAZ and Solex carburetors. Is there a fundamental difference in adjustment between them? Also interested in your opinion.

OZONE carburetor. Secrets. Diagnostics. Setup. Video

VAZ 2106 carburetor maintenance

During the operation of the carburetor, the narrow channels of the jets become clogged. This usually happens when using low-quality fuel, untimely replacement of the air filter, etc. The composition of the fuel-air mixture is disrupted and its flow into the engine is difficult. As a result, the power unit begins to operate intermittently, and its dynamic characteristics decrease. In such cases, it is necessary to flush the contaminated jets with a special cleaning compound and then blow them with air.

If the carburetor jets become clogged, they should be washed with a special agent and blown out with air.

In addition, it is recommended to periodically adjust the composition of the fuel-air mixture to the optimum using special adjusting screws. Otherwise, the engine will run unstably.

VAZ 2106 stalls at idle

In idle mode the valves are closed. A vacuum is formed under them, ensuring the flow of fuel through the hole under the damper of the first chamber. The cause of a situation in which the engine starts but runs unstably is most often the carburetor. Depressurization of its housing may occur. This will lead to excess air entering the carburetor, leaning the fuel-air mixture. The settings of the quality and quantity screws that regulate the composition and quantity of the combustible mixture may also fail. In addition, the lack or absence of fuel in the float chamber leads to a lean mixture entering the engine. The current situation will require the car owner to perform the following actions. 1. To eliminate depressurization of the housing, replace the sealing gaskets between its individual parts.

The Ozone carburetor uses a heat-insulating gasket as a sealing element

2. Tighten all bolted connections.

During operation, to prevent depressurization, the screw connections of the carburetor parts should be periodically tightened.

3. To prevent depressurization, replace the rubber ring of the solenoid valve and quality screw. 4. Check the condition of the vacuum ignition timing regulator hose for wear and mechanical damage.

A loose connection in the vacuum ignition timing regulator hose allows excess air to enter the carburetor.

Dips when pressing the gas pedal VAZ 2106

When you press the accelerator pedal, the throttle valve opens. Next, the accelerator pump comes into operation through an articulated lever. If it is faulty, then pressing the pedal will lead to interruptions and engine stop. This most often manifests itself when starting from a stop and suddenly accelerating. When you sharply press the accelerator lever, a powerful jet of fuel should be observed from the nozzle channel into the emulsion chamber. A weak stream may be the result of: • clogged supply channels, spray nozzle and discharge valve; • depressurization of the housing; • a broken tube of the vacuum ignition timing regulator. To eliminate this malfunction you must:
1. Replace the carburetor sealing elements. 2. Tighten bolted connections. 3. Replace the rubber o-ring of the solenoid valve. 4. Check the vacuum ignition timing regulator tube for wear and mechanical damage. 5. Repair the accelerator pump (rinse the supply channels, clean the spray nozzle of deposits, replace the diaphragm).

The causes of interruptions when pressing the accelerator pedal are often faulty elements of the accelerator pump.

What do we have after proper adjustment of the carburetor unit of the “six”?

Checking the adjustments of the fuel mixture preparation unit is the same important maintenance step as monitoring the condition of the car battery. An integrated approach to setting up the carburetor guarantees not only a comfortable mode of movement, but also a lot of useful points:

• An increase in power and a confident increase in speed.
• No failures in the operation of the internal combustion engine in the low and medium speed sector.
• Improved dynamic characteristics - the car picks up speed faster and accelerates in a short time.
• Optimal engine response, which is expressed in the responsiveness of the gas pedal.

The listed qualities make it possible to effectively use the combustible mixture, which is necessary both in urban traffic jams and on country roads. Therefore, proper adjustment of the carburetor unit will help the car gain speed in a timely manner and complete the planned maneuver.