The muffler is a complex structure that protects vehicle occupants from exhaust gases generated as a result of engine operation. The purpose of the exhaust system is to cool the gases, reduce their toxicity and reduce exhaust noise. The system is regularly subjected to stresses due to the conditions of the mechanism. The attentive motorist knows that maintaining the working condition of the exhaust system and making timely repair of the muffler is the paramount task, affecting personal health, condition of the vehicle and environmental friendliness. Therefore, even minor malfunctions cannot be ignored and must be eliminated promptly. If force majeure happens in your life – an accident, and the car is so damaged that it is easier to buy a new one, then give it up for recycling:

The main factors affecting the performance of a silencer are the effects of aggressive substances, high temperatures and the vulnerability of individual components.

Proper functioning of the exhaust system is based on the coordinated work of other parts:

The exhaust manifold;

catalytic converter;

Connecting pipes;

Special rings and other small parts.

Possible causes of muffler failure

There can be many causes, sometimes the cause is a combination of factors, but the most common causes of failure are:

Constant interaction with corrosive substances contained in the exhaust gas;

Temperature fluctuations;

Rapidly changing pressure;

Wear and tear on components;

Mechanical damage during driving.

These factors, either individually or together, can cause rapid wear and tear on the metal. Deterioration of the condition may provoke the appearance of holes, which entails the appearance of noise, reducing the performance of the car as a whole, part of the fuel with the appearance of holes will be wasted.

There are several ways to identify possible problems:

Strong driving noise (roar), extraneous, not previously appeared, sounds;

Exhaust smell in the passenger compartment;

External, visible to the eye damage.

If you find any warning signs that indicate a breakdown, immediately begin an inspection that will give you an idea of which part of the exhaust system is malfunctioning. If you found a serious breakage – go to the specialized service or buy a new part, because its self-repair will be in vain.

The frequent problem is the wear of sealing gaskets. To fix the breakage – dismantle the exhaust system, remove the worn sealing material, carefully clean the worn layer.

Another problem is the wear and tear of the housing elements, such as the resonator and corrugator. If the corrugator breaks, use a “bolt cutter” and dismantle the worn part. Due to the complex structure, the corrugator is poorly repairable, which is possible only with the use of welding.

The main methods of repair:

Cold welding. Cold welding is a two-part adhesive that bonds metal parts together. The composition of cold welding is designed to take into account the stresses and changes in temperature. The part must be disassembled and the following must be done:

Clean the damaged place of soot and dirt. It is recommended to clean with sandpaper or using special attachments on a drill;

Degrease the cleaned area with a solvent;

Apply the composition to the defective area. Use gloves to protect the skin from adverse effects;

Wait an hour after application, polish the cured adhesive;

Install the part after 24 hours.

It is important to work with cold welding in a room where the temperature remains above +5 degrees. Only above this temperature cold welding will react with the metal and give a positive result.

Ceramic Tape. Ceramic thermal tape is a common and easy way to patch a small hole. How to make repairs with ceramic tape:

Clean the surface of rust and dirt;

Moisten the liquid with ceramic tape;

Wrap the tape around the hole, apply the required number of layers.

Repair with ceramic tape is a temporary measure, but extremely effective in operation and availability.

Sealant. You can purchase sealant at any available auto store. The composition of sealants includes cement or ceramic additives. The compound hardens when in contact with high temperatures, sealing the hole reliably and preventing the escape of gases. Repair with the sealant is carried out as follows:

Dismantle the muffler;

Clean the damaged place with sandpaper;

Wet the cleaned surface;

Apply a thin layer of the compound and wait 30 minutes;

Reinstall the muffler on the vehicle;

Start the engine for ten to fifteen minutes to dry the sealant;

Wait ten to twelve hours before fully operating the vehicle.

Using sealant is an inexpensive and reliable method of postponing full welding work or replacing a part.

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