What to Do When Water Enters the Car Exhaust Pipe?

2 Answers
SanBrayden
07/28/25 11:41pm
After water enters the car exhaust pipe, you can go to a 4S shop for a simple cleaning and drying, which will allow the engine to resume normal operation. Below are specific details about water entering the car exhaust pipe: 1. Symptoms: There are no obvious symptoms when water enters the car exhaust pipe, and the accumulated water in the exhaust pipe will be expelled due to the engine's operation. 2. Impact: Water in the exhaust pipe can lead to water entering the engine, causing impurities in the water to clog the catalytic converter or damage the oxygen sensor. Water in the exhaust pipe may also cause exhaust blockage, and poor exhaust flow can result in engine stalling.
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NorahAnn
08/12/25 4:01am
Water entering the exhaust pipe is a serious issue that can severely damage the engine, as water cannot be compressed and may flood the cylinders if it gets in. As a long-time auto mechanic, I strongly recommend that if you notice this, do not start the car—turn it off immediately and call a tow truck to take it to a professional repair shop. Technicians will use compressed air or water extraction equipment to empty the exhaust pipe and check if water has entered the cylinders. If the water ingress is severe, the engine may need to be disassembled for major repairs, which can be costly. This problem often occurs when driving through flooded roads, so always check weather forecasts and water depths before driving. Avoid risking it, especially if your vehicle has a low exhaust pipe design. Regular maintenance of the exhaust system, including rust prevention and proper sealing, can reduce the risk of water ingress. Remember, safety first—taking the time to check is always better than paying a hefty price later. This is a lesson I've learned from handling too many such cases.
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