The following faults may occur in the use of automobile exhaust pipe:

1. Corrosion: The automobile exhaust pipe is exposed to harsh environments such as high temperature and humidity, and is easily corroded by corrosive substances in the exhaust gas. Long-term corrosion will lead to corrosion and thinning of exhaust pipe metal materials, thus increasing the risk of exhaust pipe.

2. Rupture: The exhaust pipe may rupture due to external impact, vibration or high temperature. Rupture may be caused by aging, fatigue or manufacturing defects of exhaust pipe materials. Rupture will lead to the leakage of exhaust gas, affect the normal operation of the exhaust system, and may cause problems such as noise and excessive exhaust emissions.

3. Air leakage: The sealing ring or welding point at the joint of the exhaust pipe may leak due to long-term use or material aging. Air leakage will lead to exhaust gas leakage, affect the normal operation of the exhaust system, and may cause problems such as noise and excessive exhaust emissions.

4. Blockage: The inside of the exhaust pipe may be blocked due to carbon deposition, deposits or foreign bodies. Congestion will cause the exhaust gas not to be discharged smoothly, increase the load of the engine, affect the normal operation of the exhaust system, and may cause problems such as engine performance degradation and fuel economy degradation.

5. Noise: The exhaust pipe may generate abnormal noise due to aging materials, weak connection or damage. Noise may be caused by vibration, leakage of exhaust gas or resonance of exhaust pipe. Abnormal noise will affect driving comfort and may be an indication that there is a problem with the exhaust system.

In order to avoid the failure of automobile exhaust pipe, regular inspection and maintenance are necessary. This includes checking the appearance of the exhaust pipe for signs of corrosion, rupture or air leakage, cleaning up the carbon deposits and deposits inside the exhaust pipe, replacing the seriously aging exhaust pipe regularly, and ensuring that the joints of the exhaust pipe are fastened and reliable. In addition, avoiding external impact and repairing abnormal noise of exhaust system in time are also helpful to prolong the service life of exhaust pipe.