You've probably heard such a slang and quite common word among car enthusiasts as VAZ 2114 pants. If you have no idea what it is, then everything is simple, it's just the exhaust pipe of the exhaust manifold.
The product is used to remove exhaust gases directly from the internal combustion engine. And it got its original name for the shape of the structure (one end of the pipe has a split and closer to the opposite edge smoothly flows into a single pipe) with the shape of the pants. This is how the popular name “clung” to the product.
From a design and reliability point of view, the most vulnerable point in the exhaust pipe is the sealing gasket at its connection to the manifold. Over time, the insulating element simply burns out or becomes deformed from exposure to high temperatures, especially since the thickness of the gasket metal is quite small.
What is a car muffler for?
Regardless of the make and year of manufacture of the car, all its systems serve one purpose - to ensure stable operation of the engine and movement. The exhaust system may seem insignificant compared to systems such as the brakes or fuel. However, it is the vehicle's exhaust system that has the most direct impact on engine performance.
The muffler is an integral part of the exhaust system . Its main purpose is to remove exhaust gases outside the car. In addition, the part also serves to reduce noise, since residual fuel can burn in the exhaust system pipes.
The pipe comes out from the rear left side of the car
How to attach
The muffler on the VAZ 2114/2115 is attached to the car body. To ensure that the pipe is securely fixed and does not vibrate during movement, two fastening methods are used:
on rubber suspensions.
Bolts and nuts for fastening the muffler pipes are made of special heat-resistant alloys
The muffler is attached directly to the exhaust manifold with bolted connections, which guarantee complete tightness of the joints. The middle part is also fixed with bolts and nuts. And the resonator and exhaust pipe are suspended on special hooks on the bottom with elastic bands. These suspensions are easy to remove and put on, but at the same time provide rigidity even when driving on uneven roads.
Schematic design of the exhaust system on a VAZ 2114/2115
The gas exhaust system of the VAZ 2114/2115 consists of several parts. Connecting to each other in series, all parts ultimately serve one purpose - reducing noise and removing exhaust emissions outside the body.
1 — bracket for fastening the exhaust pipe; 2 - gasket; 3 — clamping device for the bracket; 4 — additional muffler; 5.7 — “pillows” for muffler suspension; 6 — main muffler; 8 — clamp connecting the muffler pipes; 9 - neutralizing device; 10 — hinge sealing ring; 11 - sensor that monitors the oxygen concentration in emissions; 12 — exhaust pipe for mufflers
Manifold dismantling procedure - step-by-step instructions
The dismantling process itself is not so complicated; access to some nuts is difficult, so it is advisable to carry out the work on a lift or in an inspection pit. The algorithm of actions for the injection VAZ-2114 in this case looks like this:
- Remove the negative terminal from the battery or turn off the mains switch.
Drain the coolant from the system
Disabling the throttle position sensor
Disconnect the muffler exhaust pipe from the manifold
Dismantling the exhaust manifold mountings
Removing the exhaust manifold
Replacement of gaskets and installation of manifold
After dismantling the manifold, it is rarely possible to remove the gasket intact. It changes in any case , but parts of the destroyed gasket will definitely remain on the mating plane on the head side and on the manifold side. They must be carefully removed.
Changing the manifold gasket
To do this, you can use a special spray that softens the gasket residues; you can carefully remove them with a blade. In this case, the plane must not be damaged, otherwise the tightness of the connection will be broken.
Also, when installing new exhaust manifold gaskets, it is not recommended to use sealants . They can be of different quality, and during crimping they can form particles that get into the crankcase, which is extremely undesirable.
Video about replacing the exhaust manifold gasket on a VAZ-2114
How to replace a muffler on a VAZ 2114/2115
If you start having any problems with the muffler, it is better not to put it off for a long time. The life and health of the driver and passengers depends on how correctly the “glushak” works. In general, the replacement process itself begins with the selection of a new exhaust system kit. It is best not to save money, but to purchase an original factory one. This will delay the need for repeated replacement indefinitely.
In addition, it is recommended to change the fastening bolts during each replacement. It is necessary to choose products made from heat-resistant materials, since otherwise the bolts will quickly stick to the bottom and will be impossible to unscrew.
To ensure reliable operation, it is advisable to buy new rubber suspensions in advance.
What tools will you need?
To work you will need a simple set of tools:
two open-end wrenches for 13;
brake fluid or WD-40 lubricant;
screwdriver with a flat thin blade.
How to remove a muffler without a hole
The easiest way is to use an overpass or inspection hole - in this case, you can more conveniently crawl under the car body and carry out the necessary operations. However, drivers often do not have the opportunity to use such devices, so they use a regular jack.
How to repair a “glushak” with your own hands
The muffler on the “fourteenth” and “fifteenth” is considered one of the most vulnerable points of the car. The fact is that due to exposure to high temperatures, the metal quickly burns out, that is, the tightness of the system is broken. Therefore, the part must be changed as soon as there is a suspicion that it is not working.
Reasons for failure
Most often, mufflers “burn out” - that is, due to hot exhaust, the metal inside the housing begins to thin out, which ultimately leads to the appearance of holes. However, this is not the only reason why the silencer may fail:
using a homemade device - handicraft products do not differ in quality and long service life;
mechanical shocks from uneven roads - dents and deformations of the pipe also lead to loss of tightness;
Rust and corrosion sooner or later affects even the highest quality original mufflers.
In general, all of the above factors influence service life to some extent. The car owner can easily identify all of the above faults - just drive the VAZ into the inspection hole and visually examine the muffler. In addition, when deformations, burnouts and corrosion reach their “peak”, the part will begin to make characteristic sounds when moving - gurgling, sharp pops, knocking.
Why is the muffler knocking?
This part on the VAZ 2114/2115 can make knocking noises only in two cases:
it hits the body;
When moving, it touches the gas tank housing.
In any case, it is necessary to immediately take measures to eliminate this malfunction. Most often, the problem lies in severe wear of the rubber suspensions. It is enough to change them and the muffler will again return to its normal position under the bottom of the car.
Pendants are inexpensive, so you can buy new products without spending any money.
In some cases, the silencer begins to knock when its elements have been installed incorrectly - for example, after replacing the resonator or exhaust pipe. In this case, you will need to double-check that all fasteners and gaskets are installed correctly.
Citizens! It's simple! I had a knock and I was cured in five minutes! The pipes are connected with a clamp, and inside there is a spherical ring. But the connection is not movable. By changing the angle between the pipes at this connection, we change the center of gravity of the entire exhaust structure. You can also change the slope of the pipe arc, thereby moving it away from the gas tank. Experiment! Repair is a scam. They will loosen the clamp, change the degree and charge you 800. Tough!
Marseal
Video on replacing the exhaust pipe:
You've probably heard such a slang and quite common word among car enthusiasts as VAZ 2114 pants. If you have no idea what it is, then everything is simple, it's just the exhaust pipe of the exhaust manifold.
The product is used to remove exhaust gases directly from the internal combustion engine. And it got its original name for the shape of the structure (one end of the pipe has a split and closer to the opposite edge smoothly flows into a single pipe) with the shape of the pants. This is how the popular name “clung” to the product.
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.
Symptoms of a problem
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.
Causes of breakdowns of the VAZ2114 exhaust pipe
Since the unit is attached directly under the bottom of the car, and our Russian roads leave little to be desired, the most common occurrence is driving into a hole (even worse if it is hidden under a puddle) with subsequent damage to both the exhaust pipe itself and the place where it connects to the muffler. The second most common reason is the vulnerability of the gasket itself. The fact is that it is constantly exposed to a strong influence of hot exhaust gases, therefore, in an aggressive environment, the destruction of the product (burnout) accelerates. “Please note that if you have diagnosed wear or damage directly on the pipe itself, you should replace not only the unit that is damaged, but also the sealing gasket. This approach will ensure the best durability and wear resistance of the entire pipe section, and the old gasket will not become a bottleneck in the entire exhaust pipe.”
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).
The location of most of the listed spare parts is under the bottom of the car, which makes them vulnerable to mechanical damage.
The cause may be not only external damage (most often caused by falling into holes or difficult to navigate places), but also exposure to chemical reagents or the influence of climatic conditions.
