What Causes Abnormal Noises in the Exhaust Pipe?

[MorganMarie]

There are many reasons for abnormal noises in the exhaust pipe, mainly including aging of the exhaust pipe, failure of the car's three-way catalytic converter, malfunction of the ignition system, and abnormal concentration of the combustible gas mixture. The specific reasons are as follows: Aging of the Exhaust Pipe: When a car is too old, the exhaust pipe is prone to aging problems, leading to loosening, detachment, or holes, which eventually cause abnormal noises. This situation is relatively simple to resolve—just re-fix or replace the exhaust pipe. Failure of the Car's Three-Way Catalytic Converter: If the car's three-way catalytic converter fails, it cannot properly purify exhaust gases, causing them to clog and compress inside, leading to abnormal noises. In this case, it is necessary to visit a repair shop or a 4S store for professional inspection and repair.