Can the Engine Start If Water Enters the Exhaust Pipe?

[DeJames]

If water enters the exhaust pipe, the engine should not be started. Here is relevant information: 1. If water enters the exhaust pipe, do not attempt to start the engine. The accumulated water should be drained as soon as possible to prevent impurities in the water from clogging the catalytic converter or damaging the oxygen sensor, which could lead to serious engine damage. 2. If the water ingress is not severe, you can inspect the electronic systems yourself and remove any accumulated water beneath the car body. Then, remove the spark plugs to drain some of the water from the engine before reinstalling the spark plugs. This will allow the engine to start and prevent stalling. 3. If the vehicle has been severely submerged, road assistance should be called to tow the car to a repair shop. If water has entered the exhaust pipe, a simple cleaning and drying process may be required before the engine can function normally again.