Can You Drive When the Car's Exhaust Pipe Gets Water Inside?
2 Answers
You can drive after water enters the exhaust pipe. Here is a detailed analysis: 1. Function of the exhaust pipe: While driving, as long as the engine does not stall, the exhaust pipe continuously emits exhaust gases, which prevents water from entering the interior of the exhaust pipe. Therefore, the engine stalling is the cause of the car stalling, not water in the exhaust pipe. 2. Measures for water ingress: (1) To prevent water from entering the engine, increase the throttle to expel the water using the exhaust. (2) Water in the exhaust pipe may cause blockage, leading to poor exhaust flow and engine stalling. Once the water drains out, you can restart the car. (3) If the engine stalls, do not force ignition; instead, call for rescue services immediately.
I had a similar experience before. After driving through water, the exhaust pipe got flooded. I didn't pay attention at the time and started the engine, which caused smoke to come out of the engine and nearly totaled it. Later, the mechanic told me that water backing up into the exhaust pipe can enter the cylinders, and starting the engine could lead to seized internal components or bent pistons, resulting in very expensive repairs. Since then, I've learned my lesson: if you find water in the exhaust pipe, never attempt to drive or start the engine. You should immediately push the car to a safe place or call a tow truck to take it to a repair shop for inspection. After driving through water, you should also check the air filter because water can enter through there. Remember, safety comes first—even if the water isn't deep, don't take it lightly. Modern car engines are highly precise, and even a small amount of water can cause serious problems. Don't take the risk.
