How to Deal with Water in the Engine of a Flooded Car?

[McReagan]

The simplest method is to check whether the color of the engine oil is abnormal. If the oil turns milky white, it indicates that water has entered the fuel tank or engine. Check the air filter and the lower housing of the air filter one by one for obvious signs of water ingress, and inspect the intake pipe and intake manifold for clear traces of water passage. Remove the spark plugs of each cylinder and check if they are damp. If they are, it indicates signs of water entering the engine. When the engine is working normally, the pistons of each cylinder reach the same position at top dead center, and the position of top dead center on the cylinder wall is clear.