Why is there water and abnormal noise in the exhaust pipe?
2 Answers
Abnormal noise in the exhaust pipe can be caused by the following reasons: 1. The idle speed is too low. Adjust the idle speed to 750 rpm. 2. If the idle speed is normal, check whether each cylinder of the engine is working properly and if there is any misfiring issue. 3. Loose exhaust pipe fixing screws or muffler failure. Check the tightness of all fixing screws on the exhaust pipe and whether the welds between the muffler and the exhaust pipe have come loose. Here is some information about the car exhaust pipe: 1. The car exhaust bellows, also known as the car exhaust pipe hose, is installed in the exhaust pipe between the engine exhaust manifold and the muffler, providing flexible connection for the entire exhaust system. 2. It helps to reduce vibration and noise, facilitate installation, and extend the service life of the exhaust muffler system.
I've been driving for over 20 years and often hear dripping or boiling sounds from the exhaust pipe after a cold start. This is actually normal. When a car engine burns gasoline, it produces water vapor, which condenses into water when the exhaust pipe temperature is low. When enough water accumulates, it creates a flowing sound. Most cars have dedicated drain holes to remove accumulated water, which is why it's particularly noticeable in winter or humid weather. However, if you hear unusually loud bubbling sounds or excessive water flow, especially accompanied by white smoke or strange odors, it could be dangerous—possibly indicating a blown head gasket causing coolant leakage. I recommend getting it checked at a repair shop immediately if you notice these symptoms to prevent engine damage. When parking, try to find a level spot to allow water to drain more easily, avoiding steep slopes where water can accumulate more. Regularly inspect the exhaust pipe for rust or blockages to ensure safe driving.
