Replacement of exhaust pipe gasket for VAZ 2114 8 valves

2. Disconnect the catalytic converter from the exhaust pipe (see above, “Catalytic converter - replacement”).

3. 13 mm

Unscrew the two nuts securing the clamping bar and remove it from the bracket studs.

4. 13 mm

unscrew the two bolts securing the bracket to the cylinder block.

6. Using a slotted screwdriver, bend the edges of the locking plates of the nuts securing the exhaust pipe to the exhaust manifold.

13 mm socket wrench

Using an extension, unscrew the four nuts securing the exhaust pipe to the exhaust manifold.

9. Remove the gasket from the studs.

The main sign indicating possible problems with the gasket of the VAZ 2114 pants is a changed sound (bass) from the exhaust pipe when the engine is running. When an element wears out, you will immediately hear and identify disturbances in the operation of the exhaust system. This will increase the noise level and exhaust sound. However, it is worth understanding that such signs may indicate failure of other components of the exhaust system (for example, the resonator). To accurately determine the possible causes, conduct a thorough diagnosis.

Fault diagnosis

To determine operational problems, you should start the car engine. It is best to carry out the activities together, so that one person sits in the driver’s seat and, at the command of the second, increases the operating speed of the engine. The second person should be located in the inspection hole or under the overpass exactly under the bottom of the car. When the speed increases, you need to carefully inspect the entire exhaust system line, record the source of increased noise and possible leakage of exhaust gases. If you have decided to replace the problem unit, read below for instructions on how to change pants on a VAZ 2114.

Replacement of exhaust pipe gasket for VAZ 2114 8 valves

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I'm looking at the nuts that have to be unscrewed

Tell me what I need to buy in advance

wrap it overnight with a rag soaked in kerosene.

And then how to get to the garage? Will the sprinklers and locks be of any use if the pipe then warms up?

Is it recommended to apply graphite during reassembly?

By the way: what is this little ratchet? Can I give you a link so I know what to look for?

Take a gasket and new brass or copper-plated nuts

Can you tell me approximately how long?

The exhaust pipe gasket needs to be replaced, the following questions arise:

2. What else do you need to buy: 4 brass nuts, 4 M8x25 studs, anything else?

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Exhaust pipe laying for VAZ 2114 8 valves

Photo and video instructions for independently replacing the exhaust pipe of the exhaust system on VAZ 2113, 14, 15 cars.

To carry out the work of replacing the intake pipe, you need an overpass or inspection hole.

Unscrew the catalyst from the exhaust pipe.
Using a 13mm wrench, unscrew the 2 nuts securing the clamping bar and remove it from the bracket.
Using a 13mm wrench, unscrew the fastening of the bracket to the cylinder block.
Remove the bracket from the car.
Using a screwdriver, bend the edges of the locking plates of the nuts securing the exhaust pipe to the exhaust manifold.
Using a 13mm socket wrench with an extension, unscrew the 4 nuts securing the exhaust pipe to the exhaust manifold.
Remove the exhaust pipe from the car.
Remove the old gasket from the studs.
Reinstall the exhaust pipe in reverse order. Before installation, replace the gasket with a new one.

Features of the 2111 (1.5i) engine power system

Location of elements of the 2111 (1.5i) engine power supply system in the engine compartment:

1 - receiver; 2 — vacuum supply hose to the fuel pressure regulator; 3 — throttle assembly; 4 - fuel rail; 5 — fuel pressure regulator; 6 — air supply hose to the throttle valve; 7 - adsorber; 8 — air filter; 9, 10 and 11 — hoses of the crankcase ventilation system; 12 — throttle valve drive cable; 13 — diagnostic fitting

Video on replacing the exhaust pipe:

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Exhaust system design

All parts of the gas exhaust system of the VAZ-2115 car can be easily disassembled, which allows you to replace them yourself, without the involvement of specialists. Main parts of the gas outlet unit:

Bracket mounting of the exhaust pipe.
A gasket located between the pipe and the intake manifold.
The clamping part of the bracket (represents a plate).
Pipe for receiving gases from the engine.
Metalgraphite gasket in the form of a ring.
Catalyst.
Rubber mounting pad.
First (additional) muffler.
Main muffler.
Rear mounting cushion.
Fastening clamp (often called brackets).

How to notice a node malfunction

It is not difficult to determine that it is time to change parts of the exhaust system on a VAZ-2115 with an 8-valve engine.
Even a novice car enthusiast can cope with this, since the main signs are the appearance of a strong smell of exhaust gases in the cabin and an increased noise level. Most often, faults are hidden in the additional or main muffler, as well as in the gaskets between the connections, which can burn out over time. The classification of the most frequently occurring faults is as follows:

mechanical damage to the muffler;
burnout of gaskets;
corrugation burnout;
loosening of connections at joints;
cracks in the system pipes.

Problems can be spotted by visual inspection. Experienced specialists recommend removing gas exhaust units for these purposes. This way you can examine them from all sides and notice the slightest damage. After you conduct a visual inspection of the system, you need to buy spare parts and begin repairs. It's easy to do it yourself.

If there are no external problems, you can try replacing the internal resonator. This repair method will only help those who know how to handle welding equipment.

Small burns and holes can be covered with sealant. Just pay attention: it must easily withstand temperatures up to 1000 degrees. Before applying the composition, it is necessary to thoroughly clean and degrease the surfaces.

Design and purpose of the exhaust gas system

The gas exhaust system of the VAZ 2114 consists of various functional parts. Folding into one solid chain, it contributes to the normal operation of the car. The system regulates the release of harmful chemicals concentrated in exhaust gases into the surrounding atmosphere. Schematically, this system looks like this, as shown in Fig. 1. The exhaust system of the car model in question includes the following main functional components.

Exhaust manifold VAZ 2114. Serves to combine gas flows emanating from each cylinder into one common pipe. To withstand increased dynamic loads, the collector is equipped with the most rigid and durable fastening.
Catalyst. This component of the system significantly reduces the level of toxicity of exhaust gases. To do this, highly toxic emissions are converted into less toxic gas impurities using a chemical reaction.
Reception pipe. Designed to connect the VAZ 2114 exhaust manifold and the catalyst.
Resonator. By means of several “acoustic mirrors” built into the body, it reduces the level of noise that occurs during strong exhaust.
Silencers. Even more than the resonator, they enhance the noise absorption of the entire exhaust system of the VAZ 2114.
Corrugation. Thanks to its elastic structure, it suppresses vibration transmitted from the engine to the exhaust system.

Muffler replacement

Using the example of replacing this component, we will show that it is not difficult to repair the exhaust system and dismantle its components. To work, you will need to install the car in the garage above a pit or drive it onto an overpass. Disassembling this node is not so difficult:

disconnect the main and additional muffler;
bend the hooks of the hanging straps;
remove the brackets;
remove the main muffler, which is mounted on the cushions.

The exhaust system of the VAZ 2115 car is a complete analogue of the exhaust system of the VAZ 2114 car (Repair of the VAZ 2114 exhaust system). The main elements of this system are: a downpipe, a catalytic converter, an additional muffler and a main muffler.

Like the VAZ 2114, the exhaust system of the VAZ 2115 is equipped with an oxygen sensor, which is installed in the exhaust pipe of the exhaust system. With its help, automatic adjustment of the composition of the fuel-air mixture supplied to the engine cylinders is ensured.

To minimize the influence of vibrations on the car body, the main and additional mufflers are suspended due to rubber suspension cushions.

Silencer - purpose, device, operation

An important element of the exhaust system is the muffler; operating a car without it is impossible. As a rule, the muffler is located at the rear of the vehicle and, in conjunction with the exhaust system, serves to remove harmful gases from the engine, bypassing the vehicle interior.

Car mufflers are made from stainless, aluminized and regular black steel. Stainless steel “silencers” are practically not available for sale due to their high cost and long service life (their service life is 10–15 years). Aluminized mufflers are installed on VAZ 2114/2115. They are common in the domestic and European markets (service life 3–7 years). Regular black steel mufflers are cheap substitutes and last only a few months, so are rarely used.

Replacing the main muffler on a VAZ 2115 car

To complete this work we will need two “13” keys and a metal brush. We drive the car onto an overpass or inspection hole. Be sure to wait some time until the system elements have completely cooled down.

Using a metal brush, thoroughly clean the mounting clamp, with which the inlet pipe of the main muffler is connected to the outlet pipe of the additional one. Then we treat the bolts holding the clamp together with a substance that corrodes rust. For example, VD-40 can be used as such a product.

Now you can unscrew the bolts: with one key we hold the nut from turning, and with the second we “influence” the bolt itself. It should be noted that in case of severe sticking and corrosion, it may not be possible to unscrew the bolts. In such a situation, they can be cut using a grinder. Such dismantling must be carried out with extreme caution so as not to damage the flanges of the exhaust pipe of the additional muffler.

After the clamp is removed and the muffler pipes are separated, slightly lift the main muffler and remove it first from the rear and then from the front rubber hangers.

Installation of a new muffler is carried out in the reverse order of removal.

Should high-voltage wires be replaced and when?

No matter how well the armored wires are made, they also have a limited service life. According to current regulations, they must be replaced after every 30,000 km traveled. In practice, many motorists ignore this rule, continuing to travel with wires that have already outlived their useful life.

Such inattention can cause a whole host of problems, including:

poor ignition;
overclocking problems;
engine tripping;
inability to start the car.

All these troubles are caused by one single factor - an increase in the electrical resistance of the core of high-voltage wires, as a result of which it becomes “more difficult” for the impulse from the coil to reach its destination.

You can check whether you can still drive with the old wires or not - at home.

To do this you need:

Turn off the ignition.
Remove one of the armored wires.
Measure its resistance using a megohmmeter or multimeter in the appropriate mode.
If the resistance turns out to be equal to or close to the figure indicated on the wire insulation, then it is in good condition, but if it turns out to be greater, then the wire should be replaced.
Repeat this operation on the remaining three wires.

It should be remembered that if only one of the wires is faulty, then all four should still be replaced.

Also, do not forget about the cleanliness of the contacts of high-voltage wires - they can also cause ignition problems. If oxides are noticeable on the metal tip, they should be cleaned with fine sandpaper or a cloth moistened with kerosene. By following these simple rules for caring for armored wires and replacing them, you can almost completely avoid troubles associated with the ignition system.

Replacing an additional muffler

As practice shows, the additional muffler fails (“burns out”) much less often than the main one. Nevertheless, this happens, and therefore we consider it necessary to describe the process of replacing it. To complete this work we will need two keys for “13” and two keys for “17”.

First of all, unscrew the bolts securing the resonator to the catalytic converter. We pull out the bolts and disconnect the pipes.

Then we need to disconnect the additional jammer from the main one. To do this, unscrew the two bolts of the tightening clamp using two “13” keys. Remove the clamp and disconnect the pipes. Next, lifting the resonator, remove it from the rubber cushion and pull it out from under the car. If manually removing the muffler from the rubber clamps is problematic, pry them off with a screwdriver.

Removing and installing the catalyst

Removing and installing a catalytic converter on a VAZ 2115 is a relatively simple task. The procedure itself is carried out in several stages:

1. Using keys “17”, unscrew the fastening of the catalyst to the exhaust pipe of the exhaust manifold. We take out the bolts and spring washers;

2. Place a suitable stand under the catalyst. The fact is that the catalyst on the VAZ 2115 car is not fixed with the help of any rubber hangers, and therefore, in order for it not to fall on your head, after unscrewing the fastening bolts, it must be secured somehow. This can be done either by installing a stand under it, or by temporarily securing it with wire;

3. Now unscrew the catalyst from the inlet pipe of the additional muffler and carefully remove it.

We install the new catalyst in the reverse order.

What is this?

Engine overhaul refers to the work of a master aimed at returning the engine to a state as close as possible to its original state. In this case, most of the nodes are changed or restored. This type of repair is resorted to when there is a lot of wear on the parts of the unit.

The list of work may include grinding the crankshaft journal and camshaft, installing new pistons and springs, and honing the cylinders. If too many engine components are faulty, then it is more advisable to completely replace it.

The following signs indicate that it is time to overhaul the engine on the VAZ-2114:

The appearance of red, black or dark gray carbon deposits on the spark plugs.
Increased oil consumption.
The occurrence of knocking in the engine.
Increased fuel consumption.
The appearance of smoky exhaust.
Bad traction.
Engine overheating.
At idle, the engine runs unevenly.
Reduced power.

Major repairs proceed approximately according to this scheme:

Preparing the engine for dismantling (disconnecting wires, hoses, gearbox).
Removing the engine.
Removal and inspection of the cylinder head.
Disassembling the unit for diagnostics and cleaning.
Block boring. Grinding the crankshaft. Application of hone to the cylinder walls.
Weight distribution of connecting rods, pistons.
Block assembly.
Restoring the head (replacing caps and guides, straightening seats).
Assembling the engine and installing it in the engine compartment.
Connection.
Functionality check.

Tuning the exhaust system of VAZ 2115

Direct flow installation

In this case, everything depends on the financial capabilities, preferences and wishes of the car owner. If we talk about the most common option, it looks like this:

1. First of all, the exhaust manifold is replaced with a tuned “spider”;

3. Instead of the standard main muffler, a modernized one is installed - specially designed for the construction of direct-flow exhaust systems.

If you believe the statements of car owners, this kind of improvement allows you to increase the car’s power by about 7-10 hp.

Installing the "dragon language"

This type of tuning is usually chosen by those who, first of all, care about appearance rather than driving performance. In fact, the installation of the so-called “dragon tongue” does not bring anything useful other than spectacular effects. The essence of this modification is that the release of exhaust gases from the main muffler is accompanied by small fiery flashes and flames.

To implement this idea, you will need to purchase a special kit consisting of a special spark plug and an electronic control unit. You will also need electrical wires and a switch button.

The switch button is necessary to temporarily turn off several spark plugs, which will thereby lead to a higher saturation of the exhaust gases with gasoline vapors. In addition, this button will be used to briefly start the electronic unit, which will supply voltage to the spark plug, which in turn will ignite the exhaust gases.

An important point: you should remember that such tuning, if installed incorrectly, can lead to malfunctions in the vehicle's electrical equipment and disrupt the proper operation of the exhaust system. That is why, unless you have the appropriate skills and experience, it is best to have such a system installed by a qualified mechanic.

Briefly, the installation process is as follows:

1. The entire electrical system of the car is disconnected from the power source (the negative terminal of the battery is disconnected);

2. Power supply of the electronic unit is connected. In this case, the positive wire of the unit is connected either through a button or to the ignition switch. In the latter case, the flame will be released only when the ignition is turned on;

3. A system switch is installed. The installation location can be anywhere - the main thing is that the button is always at hand;

The candle is connected to the system and tested for functionality. An important point: when connecting the spark plug, it is very important that the high-voltage wire does not touch the elements of the exhaust system. Otherwise, its insulation may melt, which may result in a short circuit that will render the electronic control unit unusable.

The exhaust system of the VAZ-2114 is popularly called simply a “muffler,” which is not entirely true. People forget or don’t know, but the complex that makes up the exhaust system includes not only a muffler, but also other devices. The main purpose of the exhaust system is to remove exhaust gas outside the vehicle's dimensions, preventing it from entering the passenger compartment. It also suppresses the sound vibrations that the engine makes during operation.

Interesting!
Since the introduction of environmental standards, regulation and reduction of exhaust gas toxicity have been added to the functions of the exhaust system.

Features of the VAZ-2114 exhaust system

In all VAZ models, the exhaust system is almost identical. Differences can only be observed in the later versions of the system, which are equipped with a more complex catalytic converter design.

The muffler system of the VAZ-2114 with an injection engine includes:
an exhaust manifold. It is attached to the cylinder head through a gasket, so it is the first to take on thermal and dynamic load;

Exhaust system malfunctions and their elimination

Due to increased pressure and very high temperatures due to intense fuel combustion, the muffler quite often fails. The level of performance of individual elements and the entire exhaust gas system of the VAZ 2114 is significantly affected by the following unfavorable technological factors:

rapid heating to very high temperatures and possible overheating of the exhaust system;
frequent sharp fluctuations in temperature - from heating to rapid cooling;
permanent vibration during engine operation;
frequent impacts and mechanical damage to the VAZ muffler;
frequent pollution;
scratches and chips caused by small hard particles of the road surface;
development of internal and external corrosion;
lack of means that effectively protect the metal surfaces of the VAZ 2114 exhaust system.

All of these factors, to one degree or another, affect the safety and performance of the exhaust unit. If the integrity is broken in any place, a gas flow immediately rushes into the resulting fracture or fistula. Due to its speed and pressure, it quickly expands the emergency hole. And then the malfunction makes itself felt - the system begins to loudly “growl” and clap, exhaust gases come out at the wrong point, and the muffler knocks. In such conditions, it becomes almost impossible to operate the car.

It should be borne in mind that in addition to loud and sharp bangs, defects in the exhaust system of the VAZ 2114 can also affect the operating mode of the engine itself. Therefore, in some cases it will be necessary to carry out repairs of system elements, thanks to which you can temporarily do without completely replacing the entire assembly.

Diagnosis of breakdowns, which precedes restoration operations, is facilitated by the fact that the occurrence of defects is usually accompanied by an unpleasant strong grinding and roaring sound under the car bottom. The owner of the car remains to carefully examine the entire chain and determine the location and nature of the malfunction. Most often, breakdowns occur in the following components.

Lambda probe. It is an electronic sensor that analyzes the composition of emitted gases in order to ensure optimal combustion of automobile fuel. As a rule, after 100 thousand kilometers of the car, the metal analyzers included in the sensor lose their working properties. Usually in this case, the exhausted lambda probe is not repaired, but replaced with a new one.

Corrugation. Its elastic hose, taking on engine vibration, stretches over time due to such mechanical vibrations, which negatively affects the mitigation of shaking. If the old corrugation fails, simply replace it with a new one.
Resonator. This element of the VAZ 2114 exhaust system can periodically burn out under the influence of high temperatures of fuel combustion. Most often this is the result of using a product made of low-quality thin stainless steel. The best way to fix the problem is to replace the burnt element with a new one. However, as a temporary measure, it is also possible to weld the burnout area with a special electrode.
Connecting gaskets. A sign of their failure is the appearance of strong vibration in the exhaust system area when the engine is running. To eliminate loud rattling, most often it is enough to simply replace the gaskets.