What Are the Causes of Abnormal Noises from a Car's Exhaust Pipe?

[VanGia]

There are two main reasons for abnormal noises from a car's exhaust pipe. Below is a detailed explanation of these two causes: 1. Clogged catalytic converter: The role of the catalytic converter is to purify exhaust gases while reducing noise. Different vehicles have different catalytic converters, varying in length, thickness, and the density of the internal filter, depending on the exhaust flow. Regular cleaning of the catalytic converter can eliminate abnormal noises. 2. Exhaust pipe aging or water accumulation: The exhaust pipe is connected to the engine via a flexible joint. When this joint is damaged or aged, it can easily cause the exhaust pipe to produce abnormal noises. Additionally, when there is water accumulation in the exhaust pipe, it can also lead to abnormal noises. Simply blocking the right exhaust pipe with a towel and revving the engine can expel the water from the exhaust pipe.