What Causes the Bubbling Sound in a Mercedes Exhaust Pipe?

[KiraLee]

There are several reasons why a Mercedes exhaust pipe may produce a bubbling sound: Clogged Catalytic Converter: The catalytic converter functions to purify exhaust gases while reducing noise. Different vehicles have varying catalytic converters in terms of length, thickness, and the density of the internal filter, depending on the exhaust flow. Regular cleaning of the catalytic converter can eliminate abnormal noises. Aged or Waterlogged Exhaust Pipe: The exhaust pipe is connected to the engine via a flexible joint. Damage or aging of this joint can easily lead to abnormal noises from the exhaust pipe. Additionally, when water accumulates in the exhaust pipe, it can also cause unusual sounds. Simply blocking the right exhaust pipe with a towel and revving the engine can expel the water from the exhaust pipe.