1. Inspect pipes and pipe connections for signs of leaks, severe corrosion, and mechanical damage. Check the condition and reliability of fastening of all brackets and hangers of the system.
Note. Hangers located near the catalytic converter are usually made of heat-resistant rubber and are distinguished by their red color.
2. At the same time, inspect the bottom of the car for holes, corrosion, open seams and other defects that allow exhaust gases to enter the car interior. Seal all openings with a suitable sealant.
3. The exhaust system is often a source of rumble and other unpleasant sounds. Shake and yank the pipes, mufflers and catalytic converter. If any of the components come into contact with the bodywork or suspension parts, replace the exhaust system fasteners. The design of the exhaust system is discussed in more detail in Chapter Power and exhaust systems.
4. Examine the electroconducting brought to a lambda probe. If necessary, replace the lambda probe installed on the downpipe.
5. Inspection of the internal surface of the exhaust pipe allows you to determine the current operating condition of the engine. The composition of the deposits in the pipe indicates the quality of the engine settings. If the inside of the pipe is black and sooty, this may indicate that the fuel system needs to be carefully checked.