What Causes the Chugging Sound When Water Enters the Exhaust Pipe?

[MacCody]

The chugging sound when water enters the exhaust pipe is due to damage to the exhaust pipe, which requires replacement. Specific causes of the abnormal sound: Since the engine exhaust emits high-temperature, high-pressure waste gases, along with some backfire explosions, the exhaust pipe must silence and purify these emissions. If the exhaust pipe is damaged (e.g., has a gap), waste gases will escape from the gap, causing the chugging sound. Precautions: If the exhaust pipe is damaged, it not only causes noise pollution but also significantly impacts the ecological environment if the emitted waste gases are not purified by the three-way catalytic converter.