What are the signs of water ingress in a vehicle?

[AdamMarie]

Signs of water ingress in a vehicle include: insufficient power and rough idling. The following methods can help determine if a vehicle has water ingress: 1. Check the engine oil condition: Normal engine oil colors range from light yellow, brown, to transparent colorless, but it should not appear milky white. 2. Inspect the air filter: If there are obvious signs of water ingress on the air filter or the lower housing of the air filter, a clear conclusion can be drawn. 3. White smoke from the exhaust pipe: When there is water in the engine fuel or combustion chamber, the water is heated by the combustion heat in the cylinder, turning into steam that exits through the exhaust pipe, forming white smoke. If white smoke appears after the vehicle has driven through water, it is highly likely caused by water ingress into the engine.