It so happens that a strange unusually loud rumble is suddenly heard from under the car. And then even an ignorant driver understands - the problem with the "glushak"! Most often, burns appear, less often the elements of this node come off from each other.
But, fortunately, most of the breakdowns can be fixed by making a do-it-yourself muffler repair. The main thing is to understand which of the following reasons led to the malfunction:
If such a nuisance occurs, you should not postpone the repair of such an important assembly unit, so as not to deafen others and yourself with a nasty noise. In addition, the unit may simply fall apart. Next, we will consider how to make a do-it-yourself muffler repair using the example of different cars.
In many cases, a car enthusiast can do without a welder, electrodes and a car service. However, this option for eliminating the problem is most often not pleasing with the subsequent durability. It is of a temporary nature, for example, if there is no time to go to servicemen.
Let's consider repairing a muffler with our own hands using the example of a ZAZ Tavria car.
We begin to repair the muffler of the Tavria car with our own hands from the inspection pit.
In fact, the recommendations for many other cars also look like. After all, we specifically described these recommendations in general terms, which help to repair the muffler with our own hands, but only with cold welding.
Another thing is when the front pipe fails. Here it is unlikely that you can help with local repair of the exhaust pipe of the muffler with the help of some cunning means and with your own hands. There is only one way out - replacement. After all, these "pants" - receiving pipes - perceive the very first powerful blow of exhaust gases. The load is so great that local fittings will only help you get to the garage.
Also read about replacing the propeller shaft cross and repairing the starter with your own hands.
VIDEO We dismantle the rear part of the muffler.
We detach the resonator.
We unscrew the clamp bolt that holds the front pipe.
We open the hood, then unscrew the nuts securing the intake pipe to the exhaust manifold.
We remove the defective part, as well as the gasket.
We install a new part together with a new gasket according to the reverse sequence.
The main thing here is not to forget to process threaded connections that cannot be loosened with a penetrating grease of the "vedashki" type. And after processing, wait a few minutes.Although it is possible that some nut will have to be carefully cut off with a "grinder", because all elements of the exhaust system work in extremely harmful conditions, so they quickly stick to it.
And now we will consider repairs on several more cars. Take Nissan, for example. If the gasket of the unit burns out, it is better to replace it. For Nissan Note, like other cars, do-it-yourself repair of the muffler gaskets does not make sense.
ceramic sealant;
tin tape;
scissors for metal;
pliers with fine ends;
hammer.
Be sure to clean the leaky place. The assembly does not need to be removed from the vehicle.
Apply a generous amount of ceramic sealant with your fingers (we use gloves to protect your hands) directly on the hole.
We wrap this part of the pipe with a tin tape. We cut off the protruding ends of the tape, leaving 2 centimeters from the pipe.
Bend the remaining ends with pliers.
We knock the bend with a hammer so that the clamp obtained in this way squeezes the pipe tightly.
With the result obtained, you can travel more than one hundred kilometers.
In addition, consider repairing a muffler at a Gazelle. Let's say the resonator is broken. This element of the system uses a tube with many holes. Due to them, low frequencies are extinguished - the gas, passing through many holes, rubs against itself.
You need to do some simple manipulations.
We carefully clean the gap that appears with sandpaper.
We hammer it abundantly with the composition, mixing the components. We also spread a large layer on top, gloves should be on the hands.
We give the squad time to grab.
Sand lightly with sandpaper.
With such a repair of the muffler with your own hands and without welding, you can also drive a decent number of kilometers.
However, if such a muffler repair turned out to be short-lived, it is better to call in for a service. There you will definitely have major welding works, this will allow you to travel hundreds of thousands of kilometers without thinking about the release. Moreover, everything will not cost so much.
The cost of welding, together with the removal of the element and its installation back from the car service masters, is indicated in the table, relative to different large cities of the Russian Federation. Here is the table.
Exhaust system device
The exhaust system consists of the following elements:
The exhaust system is designed to remove exhaust gases from the engine cylinders.
Exhaust manifold;
Oxygen sensors;
Catalytic converter (muffler catalyst ) or a particulate filter;
Exhaust pipeline;
Pipe with vibration-insulating coupling (corrugation);
Resonator or pre-muffler;
Main muffler;
Muffler suspension.
Almost all elements, except for the exhaust manifold and sensors, are made of stainless steel. The experience of operating a car shows that even such steel can rot under the influence of chemicals and temperature changes. The places of the welded seams are also susceptible to corrosion, because during the welding process, under the influence of high temperature, the parts to be welded are connected to each other with a fusible electrode, which does not carry protective properties, the temperature of the stainless steel changes and passes into another state of aggregation: austenite or ferrite, which is allowed it is good for it to oxidize with air and rust. Impact loads that appear from road irregularities have a negative effect.Often, mechanical damage appears on the muffler and resonator, which reduces the flow area, and this slows down the rate of exhaust gas removal, that is, the cylinders are poorly cleaned, and this leads to a loss of engine power, a decrease in efficiency and an increase in fuel consumption. You can often find a simply burnt out muffler. This happens when the fuel mixture does not completely burn out in the engine cylinder, but burns out in the exhaust system. All malfunctions of the exhaust system can be quickly eliminated and on their own.
Car muffler device
The exhaust gases pass first through the resonator, where their speed and noise level are reduced.
Exhaust gases travel through the exhaust system under high pressure, and their movement is accompanied by a sound wave that travels faster than gases. The muffler consists of pipes of various diameters not connected to each other, and a steel mesh and sound-absorbing material are installed in the muffler body. Mostly fiberglass is used as such a material.
The muffler corrugation is designed to reduce vibration loads on welded seams and suspension system elements. However, such an element is exposed to high temperatures and mechanical damage. The corrugation is a small elastic element, which is covered with a metal protective mesh and installed in the exhaust pipe. The corrugation is not repaired, but is completely changed, especially since the price of the muffler corrugation is low. But if there is no welding machine at hand or it is impossible to get to a car service, then it can still be repaired. The most common phenomenon in which a muffler corrugation is repaired is a violation of the integrity of the weld. In case of repairing the corrugation with your own hands, you need to purchase a repair kit for the exhaust system or cold welding, fiberglass and epoxy resin. A "tourniquet" can be applied in the seam area, but it is worth remembering that this operation is temporary, so it would be most optimal to buy a new corrugation and weld it into place.
It is necessary to clean the right place on the weld with coarse sandpaper;
Degrease the repair area;
Prepare the composition for repair according to the instructions on the package;
Apply the mixture liberally to the weld seam and allow to dry.
Saturate the fiberglass with epoxy and screw it tightly in the diameter of the weld;
Over the fiberglass, coat with cold welding another layer in a circle and let cool.
In this way, the weld seam rupture can be temporarily repaired. Often, when repairing a muffler, the corrugation is also replaced.
Replacing rubber hangers for a car muffler
Rubber suspensions are easy to change - you need a little oil and a long screwdriver.
This system is a set of rubber cuffs that are installed between the body and the metal muffler. They wear out mainly from impacts, and rubber is also susceptible to aging from high temperatures. The number of such elements is calculated during the design of the exhaust system, therefore, one torn fastening elastic will lead to the breakage of the rest. They are easy to change, and for this you need a little engine oil and a long screwdriver. Oil is needed to lubricate the hinges with a screwdriver to remove the rubber mounts, and then install new muffler hangers.
The muffler pipe is welded to the corrugation on one side, and on the other side it is connected through a clamp to the resonator tube. It changes in case of burnout or shock.To replace it, it is necessary to cut off the corrugation with a grinder at the place of the weld seam and remove the clamp. Usually it is very strongly "welded" with the resonator receiving tube, so it must be knocked out through the spacer with a hammer. Next, install a new downpipe and weld on the corrugation.
This element most often burns out. Holes are formed on its body through which the exhaust gases come out very noisily. The resonator changes in aggregate, because its cost is not very high. However, if a quick repair is needed, you can use the replacement method using cold welding, epoxy resin and fiberglass. In this case, it is necessary to apply a tourniquet impregnated with epoxy resin over the layer of cold welding, and then coat the entire fiberglass with another layer of welding. It must be remembered that such an operation is temporary.
Car muffler repair without welding
Cracks that form at the weld can be sealed with muffler sealant.
Clamp on the pipe of the muffler of the car
The resonator outlet pipe and the silencer inlet pipe will be connected in two ways:
Through the tie with a clamp;
Through the flange.
The most cost-effective way to repair a muffler can be the use of cold welding.
In the first case, the diameter of the resonator hole is larger than that of the muffler. They are joined to each other and tightened with a clamp. In the case of a flange connection, the pipe diameters are the same, therefore it is necessary to install a heat-resistant gasket between the connection of the muffler to the resonator. rust formation , it is possible to cover its body with heat-resistant spray paint for the muffler before the beginning of the winter season, which will serve as an obstacle for salts and aggressive environmental factors. This material should be used before the beginning of each winter. Also, when repairing, it is necessary to replace the muffler ring.
VIDEO
The exhaust system of the car performs very important functions to reduce the noise of the engine, reduce the temperature of gases escaping from the cylinders, as well as to partially eliminate the smoke and toxicity of exhaust gases.
The malfunction of the elements of such a system cannot be unnoticed. A muffler breakage is especially evident. When depressurizing, this element immediately loses the function for which it received its name.
Given this feature of the breakdown, it is necessary to restore the working capacity of this part as quickly as possible, otherwise increased attention on the road cannot be avoided not only from motorists moving in the stream, but also from traffic police.
The easiest way to rectify the situation is to install a new part, but due to various circumstances, replacing an inoperative muffler may not be possible. Fortunately, it is possible to repair the muffler with your own hands without welding and replacing.
This article will consider simple and effective ways to restore the performance of this element of the exhaust system of a car, but first, it should be recalled under what circumstances such a breakdown can occur.
It is easier to prevent a disease than to treat it later. The same is true for car breakdowns.
Of course, all the nuances on the road cannot be avoided. But knowing about the dangers that threaten the elements of the exhaust system of a car, you can try to delay the occurrence of one or another malfunction with preventive measures.
If the car is used constantly, then sooner or later problems with the muffler will arise, regardless of the quality of the material from which this part is made. Located in the lower part of the car, this part is constantly exposed to the abrasive effect of sand and stones falling on its surface. And if, when the car is moving, a sufficiently large solid object turns out to be between the wheels, then from a strong impact the muffler can be completely destroyed.
Therefore, the main rule of extending the life of the unit is to drive the car carefully.
The muffler is connected to the exhaust system by means of threaded connections, so if the nuts are not tightened well enough, this part can be lost while the vehicle is moving. To prevent this from happening, the condition of the threaded connections of this element of the exhaust system should be monitored from time to time.
The muffler often becomes unusable from burning out the metal, but this process cannot be completely stopped. Slightly slowing down the failure of this part as a result of thermal and corrosive effects is possible only when processing the inner surface of this part using graphite impregnation.
If, despite all the preventive measures taken, the muffler burned out or its body was damaged as a result of mechanical stress, then many owners immediately become interested in the question of how to connect the muffler pipes without welding.
You can carry out such repairs at home using a special sealing compound.
Cold welding is a two-part adhesive that can be used to glue metal products. Is it possible to weld a muffler with cold welding, because this part is affected by a very high temperature of the exhaust gases.
The adhesive composition of cold welding tolerates high loads and temperatures well, therefore, when a burnout appears in the muffler, or cracks from mechanical stress, it is necessary to remove the part from the car and perform the following actions:
Clean the damaged area thoroughly. Cleaning is carried out with coarse sandpaper or using attachments for a drill or grinder.
The metal, free from rust and carbon deposits, is thoroughly degreased with a solvent.
Cold welding is applied to the damaged area. Gloves should be used to apply the plastic type of glue.
After applying the composition, it is necessary to wait about an hour, and then polish the layer of hardened glue.
After a day, the part can be installed on the car and operated without any restrictions.
The muffler must be repaired by cold welding in a warm room. Only at temperatures above +5 degrees will the two-component composition of the glue react with the metal surface.
VIDEO
Ceramic tape is a popular and effective remedy for muffler repair.
A small hole in the muffler is closed in the following sequence:
The metal is cleaned of rust and carbon deposits.
The ceramic tape is wetted with water.
The hole is closed by repeatedly wrapping the muffler with ceramic tape.
This method is temporary, but during the entire service life of the "bandaged" muffler, its function will not be impaired, and in case of repeated burnout, you can easily wind a new layer of ceramic tape.
VIDEO
In the trade network you can find special high-temperature sealants for the exhaust system of a car.
Such funds in their composition have special cement or ceramic additives. Which, when exposed to high temperatures, freeze and form a layer that prevents exhaust gases from escaping from the damaged area of the vehicle's exhaust system.
The process of repairing a muffler with a sealant is usually carried out in the following sequence:
The damaged area is carefully cleaned with sandpaper.
The cleaned surface is slightly moistened.
The sealant is applied in a thin layer to the damaged area of the muffler and the part is cured for 30 minutes.
The muffler is installed in place.
For 10 - 15 minutes, the car engine is started to dry the crack sealed with a sealant.
After 10 - 12 hours, the car with the repaired unit can be used.
The use of a sealant for repairs can delay the purchase of a new part for a long time.
VIDEO
Reviews about various means of repairing mufflers can be found on the Internet, but it can be very difficult to choose a tool that could be guaranteed to restore the working capacity of a part.
Car mechanics engaged in the repair of the exhaust system, if it is not possible to purchase a new muffler or repair the damage by welding. It is recommended to purchase an expensive ceramic sealant and use it to seal the hole.
To increase the reliability of the coating with a high-temperature sealant, on top of the applied composition, experts advise winding several layers of tin, which must then be securely fixed with a wide clamp.
With the correct execution of such repairs, the muffler will last a significant amount of time. And with the formation of new burnout points, it will be possible to repeat the above actions in a new place.
VIDEO
How to repair a muffler without welding is described in detail in this article. All of the listed methods of eliminating damage to this part are actually working, so the choice of method depends entirely on the owner of the car.
If you have free time and a desire to experience all the methods of eliminating such a breakdown, you can start repairing it with the help of cold welding. Which is inexpensive and you can buy such glue in any specialized online store.
The exhaust system is a rather complex design, which includes several components. The most voluminous and creating the greatest number of problems, as practice shows, is the muffler. The malfunction of this element of the exhaust system is always heard from afar, and in the most literal sense: the muffler got its name for a reason.
The resulting malfunctions of the exhaust system are quite natural: each structural element is subjected to severe loads, which sooner or later lead to the manifestation of a malfunction. The muffler is no exception - on the contrary, it absorbs all the exhaust gases from the engine.
Muffler malfunctions can be of several types:
mechanical damage (obtained, for example, as a result of a strong blow);
corrosive destruction;
burnout of the muffler walls;
separation of individual structural elements.
It is necessary to understand that it is quite difficult to deliberately damage the muffler - after all, it was originally designed for high loads, and this element has corresponding resistance to damage. A muffler malfunction usually occurs for the following reasons:
mechanical impact (as a result of a strong blow or during prolonged driving on rough terrain);
exposure to exhaust gases at a sufficiently high temperature;
the influence of moisture;
the effect of corrosion due to the appearance of condensation in the internal cavities of the muffler;
sudden temperature changes and excessive vibration (as a result, a destructive effect on welded seams is produced);
the presence of factory defects.
Any of these causes can lead to muffler malfunctions, down to through holes. The damaged part will immediately make itself felt with a characteristic roar, so you will have to troubleshoot in the very near future.
If the problem was only in the creepy sound, then some time with the repair could wait, but a damaged muffler significantly reduces the efficiency of the engine and increases fuel consumption ... That is why a good owner will try to fix the problem immediately after its detection, without waiting for the accompanying negative effects to appear.
With some skill, you can independently carry out work to eliminate problems in the muffler quickly enough if you follow a clear sequence of actions. The repair can be conditionally divided into several stages:
Dismantling the muffler.
Visual inspection and identification of the problem.
Directly repair work.
Re-assembly of the muffler.
There should not be any complications during the work, and the elimination of problems is carried out in one of the ways described below.
Recently, the method of cold welding has become increasingly popular, which makes it possible to quickly and efficiently patch any hole. Cold welding is a versatile compound that cures very quickly and has excellent resistance to oil, gasoline and other corrosive substances.
Cold welding comes in two forms:
Liquid. To create a high-quality patch, a liquid mixture is used: it becomes a shell and fastening material for reinforcing elements. The result is a reliable connection to the part.
Plastic. Such a composition, in addition to the high quality of the connection, is distinguished by excellent adhesion, which allows repairs to be carried out on poorly prepared surfaces.
For a high-quality repair of a muffler using cold welding, the following operation algorithm must be observed:
First, the damaged area is sanded to create a flat surface on which it will be easier for the material to anchor.
Further, the cleaned area must be degreased. Gasoline or alcohol is well suited for these purposes.
After preparing the site, you need to take the required amount of adhesive and bring it into working condition according to the attached instructions.
The finished mixture is applied to the damaged area and leveled. The work must be done as quickly as possible: the sealants begin to dry out within a few minutes after application.
The final stage is drying. The finished part must be left for a while to allow the glue to dry completely.
When it comes to repairing a muffler without welding, then various options for bands and patches that can be fixed with fasteners immediately come to mind.
One of the methods for restoring the muffler's performance looks like this. For repair, a special fiberglass bandage is taken, which is applied over the damaged area. This material is designed to work in high temperature conditions, so you can forget about the problem for a while. In addition to bandages and cold welding, regular metal patches can also be used. Reliable clamps are suitable for fixing them, firmly pressing the patch to the muffler.
However, regardless of the do-it-yourself muffler used for repairing the muffler without welding, you need to understand that such a solution will be temporary. And the sealant, and the bandage, and even a patch securely fastened with clamps - all these materials can eliminate only the problem, but not its cause.
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The reason is the damage to the integral part, which cannot be restored to its original state even when using a welding machine. If serious burnouts or holes in the muffler are found, the best course of action would be to replace it. .
Sometimes it is simply impossible to solve the problem on your own and without the use of welding. For example, if the muffler bank is damaged, it is quite possible to use all the described means to create a temporary patch, but if the exhaust pipe burns out from the muffler, then it will be almost impossible to fix such a malfunction with your own hands.
In addition, the need to replace or repair a muffler rarely arises spontaneously - usually there are prerequisites for this. To prevent them, you need competent prevention: the use of suitable fuel, a balanced driving regime and timely car maintenance.
VIDEO
Repairing the muffler without welding is quite possible and can be done by hand without any problems. There are several ways to fix the problem, and they are not expensive or difficult to learn. At the same time, it is important to understand that any repair will only delay the inevitable replacement of the muffler - no patches will be able to return it to its original performance.
Many car enthusiasts do not even think that a muffler is one of the parts of a car that works in the harshest conditions. Sometimes, it is very, very difficult to repair a burnt-out muffler.
The content of the article:
Reasons for failure
Purpose of the muffler
Repair methods
How to prolong life
Video
Before proceeding with the consideration of elimination methods, we will figure out why the muffler fails, because if you know the reasons, you can prevent several problems at once.
Where there is no asphalt, most often stones flying from under the wheels of a car hit the muffler. It is heated by exhaust gases to a temperature higher than the engine itself, because it does not have a separate cooling system. Of course, during the passage through the exhaust tract, the gases cool down, but not by that much.
Another point is condensation. In the cold season, this problem is especially acute, because the muffler is cold before the engine starts, and then it gradually heats up, albeit to a low temperature. The water that condenses on the inner walls does not evaporate, and every day it becomes more and more. And only in summer, in hot weather, this phenomenon passes.
Constant moisture leads to the fact that the "jar" begins to rust and rot, which, in turn, leads to cracks and holes. In addition, the exhaust system is suspended on rubber hangers to avoid vibrations, which leads to cracks in the welded seams.
All these factors do not contribute to the long life of a car muffler. First, small foci of corrosion appear, then cracks and holes, and finally, the muffler may simply cease to perform its functions, and simply "fall off" along the way.
When designing the engine and other parts of the future car, a huge number of factors and indicators are taken into account. The main functions of the muffler are to reduce the noise level from a running engine, to maintain the working pressure of gases in the system. It's not just that they called it a muffler.
In case of cracks in the muffler, firstly, a decrease in exhaust gas pressure, loss of engine power, the car will "drive worse" is possible. Of course, this applies to old cars that are not equipped with a catalyst. And secondly, the noise increases sharply, up to a level that does not allow the operation of the car. The exhaust, as they say, is a secret, and this is even worse than without a muffler at all.
Why is it worth repairing and not changing right away? In many modern cars, a muffler is a rather expensive part. In addition to cost, the obvious disadvantage of this path is the replacement time. The part is not often changed, which means that the likelihood of its availability in a warehouse, in a store or in a service is rather low. In most cases, the muffler does not fail entirely, but only requires the repair of individual parts.
In addition, it makes sense to repair the muffler because modern parts do not differ in quality. In most cases, the new one lasts at best for one and a half to two years.
So, there are several ways to repair a faulty muffler. If only a small hole or crack appears in the muffler, it is usually repaired using high temperature “cold welding” or sealant.
This method often does not even require removing the part from the car. In addition, such products are usually sold in many car dealerships, that is, you do not have to waste time looking. Such compositions are able to withstand temperatures up to 1000 degrees, while maintaining their properties. Of course, this is a temporary method, since the welding will still fly off from the vibrations.
If you notice the damage in time and fix it with a sealant or "cold welding", you can avoid costly repairs and not think about replacing the muffler for a long time. Also, this method allows you to do without a visit to the service center and carry out repairs on your own. The only thing that needs to be paid attention to is that the repairs must be carried out in a warm room, because at negative temperatures, sealants and "cold welding" lose their adhesion qualities and a good connection at the place of damage simply cannot be done.
If the crack in the muffler already has serious dimensions, or the corrosion has made significant holes, then the method of wrapping the damaged area with a bandage with special impregnations - ceramic or silicate - is used. Such funds are also able to withstand temperatures up to 1000 degrees, and in addition, due to the winding in several layers, they have good strength characteristics. But in no case should you use epoxy resin with fiberglass. The fact is that the resin will crack under the influence of temperature and simply fall off.
Simply put, in this way it is quite possible to repair a "burnt out" muffler even in the field. This method may require removing the entire muffler or parts of it. This repair method will not work if the junction of the pipe and resonator, or, as it is also called, "banks", is damaged. In this case, it is necessary to use electric welding.
In no case should you use an electrode welding machine, since even the most experienced and skilled specialist will not be able to weld metal even with a 2 mm electrode, the thickness of which does not even reach 1 mm. Semi-automatic wire welding only. Of course, you can use argon, but it's expensive.
For welding, most likely, it will be necessary to dismantle the entire muffler or separate parts if only replacement of some parts is required. The damaged part, as a rule, is cut off entirely with a grinder or other cutting tool. And instead of it, a new, similar part is installed using welding.
An important point is the correct selection of replacement parts, because the parameters of the muffler directly affect the operation of the engine. Joining the parts by welding allows you to maintain the tightness of the muffler and its strength. In addition, such a connection is less susceptible to vibration. For repairs by welding, it is recommended to contact the service or to qualified technicians with the appropriate equipment.
Can breakage be avoided? Unfortunately, the possibility of a muffler failure cannot be completely ruled out. At the same time, the implementation of scheduled inspections and current repairs can significantly extend the life of this part. If you notice that the car has begun to respond worse to the gas pedal, and when driving there are extraneous noises, we advise you to inspect the muffler and, if damaged, make repairs using one of the recommended methods.
VIDEO
Vehicle malfunctions must be identified, warned, and eliminated in a timely manner. Many car enthusiasts prefer to service and repair the car with their own hands. Let's figure out how you can repair the muffler corrugation in your own garage without using welding.
The exhaust gas system consists of the following components:
Intake manifold. Connects multiple outputs into one. Hot gases are emitted from the combustion chamber into it.Having slightly reduced the temperature, they burst into the neutralizer (initial catalyst).
Neutralizer. The speed of gases is extinguished, the temperature decreases. Passing through plate filters, they are cleared of harmful toxic substances.
Corrugation. Connects the intake manifold to the muffler pipes, while compensating for mechanical movements.
Second catalyst. A pipe with many sections. Here the gases are further purified in accordance with international standards.
Resonator. The first muffler, where holes, partitions, slots, grilles are arranged. Gases, passing through obstacles, lose strength, speed, sound waves subside. In expensive cars, resonators are tuned like an organ, creating a pleasant sound.
Muffler, exhaust pipe. They dampen the final noise, lower the temperature with their porous structure, the presence of fillers, partitions.
A car with a serviceable, sealed exhaust system works quietly, the sound of a running engine is almost inaudible. The main purpose of the system is to discharge into the atmosphere the waste gas material formed after fuel combustion.
An important role in this is played by:
reduction of noise resulting from the operation of the motor, removal of gases;
neutralization of their toxicity;
creating the necessary pressure for the engine.
The greatest damage to the exhaust system is created by external influences. Corrosion is rapid, day after day corrodes the metal, turning it into dust. City utilities use deicing agents, saline solutions. These substances, mixed with sand, fine gravel, significantly accelerate the process of introducing rust into the exhaust system, which is located in the most vulnerable place under the bottom of the car.
VIDEO
The condition is complicated by temperature differences in the off-season, especially the welded seams of the flanges near the muffler, exhaust pipe, corrugated section suffer. Condensate, which accumulates inside the resonator, muffler, adds destruction from the inside, "aggressive" chemical compounds present in the exhaust gases finally finish off the entire structure.
Mechanical damage significantly accelerates the process of failure of elements. Sharp stones, periodic contact with pipes, corrugation planes, muffler reservoir on road irregularities create cracks, scratches, ruptures of the metal layer, protective coating. Slowly but surely, small holes appear in the elements of the exhaust system, which, increasing in size, bring discomfort.
The machine starts to sound differently. At first, small rattling sounds, dull pops gradually appear. Further, metallic notes, loud exhausts become audible. And finally, when the accelerator pedal is pressed sharply, a loud roar occurs, which can be heard from a kilometer away. This is how sports cars roar at international races.
Symptoms of malfunction are increasingly making themselves felt. The most notable ones are:
loud roaring, sneezing, popping;
reduced engine power, weak traction, acceleration during acceleration;
unstable rhythm of the engine, jumps in idle speed;
filling the passenger compartment with exhaust gases;
soot on metal parts.
You can identify burnt holes while the car is running on an overpass or in a pit in the garage. Puffs of hot exhaust gas and smoke erupt from them. Many motorists turn to a familiar welder to weld the affected area or apply a metal patch with their own hands. After that, the car can travel for a couple of months.
All the same, a major overhaul with the replacement of the corrugation mesh, the insides of the muffler is inevitable. There is no need to hesitate with the repair, because a running exhaust system will cost the car owner much more. It is easier and cheaper to immediately identify defective areas, repair it with available materials with your own hands.
Burned-out components: corrugation, muffler, catalyst - are most often restored, dismantled, changed by welding.In parallel with this, there are two options for repairing the exhaust system with your own hands without using welding. The first method is intended for permanent installation of the corrugation instead of the damaged one, the second - temporary replacement in emergency mode followed by permanent repair.
A new corrugation costs 700 rubles, to weld, they take 2500 rubles. The total is 3200 rubles. Instead of welding, you can repair the exhaust system with clamps. It is necessary to buy two Zhiguli clamps measuring 48 mm, corrugation with a section of 45 mm, 200 mm long. The whole purchase costs 1000 rubles. Native corrugation can be different - 100-200 mm, but this is not a hindrance. Tools: grinder, cutting wheel for metal.
The right side of the car is raised with a jack, the protection is removed, the studs of the intake pipe are unscrewed from the manifold. A long clamp is released from below, a muffler is taken out. The worn-out corrugation must be cut off with a grinder. On the new one, cuts are made along the welded universal pipes. This is done to better tighten the clamps. The corrugation is profitable from both sides, covered with clamps. Assembly is carried out upside-down.
If the corrugation is burnt out, and the owner cannot get out to the workshop, there is a temporary option for replacing it with his own hands without welding. A new corrugation, an elastic medical bandage is bought. On a pit or overpass, it is tightly wrapped with a bandage well impregnated with epoxy resin. The minimum operation after such a repair is one month, the maximum is three. However, it is not worth delaying, since the rest of the elements of the exhaust system will begin to vigorously collapse.
To avoid costly repairs, every car owner must carefully inspect the entire bottom and exhaust gas system on a pit or overpass twice a year. This will allow you to identify minor scratches, cracks, and corrosion centers as early as possible.
Video (click to play).
At the initial stage, they can be cleaned, puttyed, thereby preventing further spread. With this attitude, your car will always drive with a pleasant whisper, bringing pleasure to the owner.
