What to Do When Water Enters the Car Engine Block?

[OPreston]

Clean the accumulated water inside the engine, remove the intake pipe and intake manifold, and use compressed air to dry out the water inside. Replace the engine block, connecting rods, and pistons entirely. Seek repair at a maintenance shop.

[BeauRose]

Oh no, water in the engine? That's serious! I've been there before—a few years ago, my car got hit when driving through deep water during a heavy rain. Water entered the cylinder block, and if not handled promptly, it can cause piston seizure, part rusting, or complete failure. The critical step is to stop the car and turn off the engine immediately—never attempt to start it, as internal pressure will make things worse. It's best to call a tow truck and take it to a professional repair shop, where technicians will disassemble, inspect, clean, and replace seals. When driving, always be cautious of waterlogged areas, especially if the water level exceeds the wheel hubs—just take a detour. Prevention is much cheaper than repairs. Regular vehicle inspections can also reduce risks.