How to avoid leakage in the exhaust system
Tips for motorists

How to avoid leakage in the exhaust system

All leaks in the exhaust system result in increased fuel consumption and pollutant emissions, as well as reduced engine power. Fortunately, there are products specifically designed to ensure the tightness of exhaust parts.

Leaks in the system youclap

The exhaust system is of great importance in the operation of the car, as it is entrusted with discharging all gases and products of ignition to the outside, minimizing their harmfulness. In addition, some sensors, which include the design of this system, continuously measure the parameters of the exhaust gases to detect deviations of indicators. The exhaust system includes the following components:

  • Catalyst
  • Particle filter
  • Probes (Lambda, Nox)
  • Silencers (one or more)
  • Exhaust pipes
  • Resonators

The exhaust system is one of the elements that is most susceptible to wear over time and mileage, as it is exposed to weather conditions and high exhaust temperatures.

One of the most important aspects when replacing components in an exhaust system is also to ensure that each component is properly sealed between different categories of exhaust gases to prevent moisture or particles from entering the system.

Ensure exhaust tightness

For this, high-performance sealant products are used, they are designed specifically for exhaust systems. Used at ambient temperature during assembly of parts and by means of heating from exhaust gases - the paste is cured.

Among the advantages of this product are its durability and strength, as well as a high degree of adhesion. Being very sticky and strong, it remains relatively rigid and, once hardened, it can break from light impact.

It should be recalled that prior to use, it is necessary to prepare a surface that will be bonded and clean it of dirt and impurities. It is also recommended to sand a bit, on the outside of the exhaust pipe and inside.

Crack repair in the exhaust system

In addition, such sealants serve to ensure tightness when replacing exhaust systems or to fix small holes or cracks that appear in the exhaust system.

To do this, you must first clean the area, because the presence of rust or dirt can interfere with a good result. Then we wet the surface and apply the paste with a spatula. In order to repair a crack or hole of a larger size, you can put the metal mesh directly in the place of behavior and apply the paste on the mesh, to give the patch additional strength. Then you should start the engine; due to heat in the exhaust gases, after about 10 minutes, the paste hardens completely.

In any case, the use of such pastes for repairing cracks should be used only as a method of elimination in emergency situations, since it is specially designed for sealing joints of the exhaust system. A car enthusiast should always have the means and products specific to each type of repair.

Questions and answers:

How to check where the exhaust system is running? During visual inspection, black spots or discoloration of the pipe paint will be visible at the place of depressurization. In winter, when the engine is running under the machine, smoke will come out of the chimney.

How to identify a malfunction of the exhaust system? In addition to visual inspection, while the engine is running, you need to listen to the exhaust sound: whistle, clicks and hum (depending on the size of the hole that appears).

Why does the muffler flop? Due to natural wear of metal in conditions with high humidity (steam in exhaust gases) and high temperatures. The weakest point is at the joints of the pipes (poor sealing) and at the seams.

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