What happens when the car engine is flooded?

Consequences of water entering the automobile engine: 1. If the engine only takes water from the air filter and mixes it with water vapor, there is no big problem at this time. We only need simple treatment to clean up the water vapor in the air filter, throttle and cylinder. 2. If there is a lot of water in the engine, it will not affect the normal driving, but the sound is relatively loud. It may be that there is a small amount of water in the oil and gasoline. We need to change the oil and clean the engine related accessories; If there is a lot of water, it means that the engine has been flooded, not mixed with water, but the car has not started and the engine has not been damaged. We need to drain the water, clean it up, then reinstall it and change the oil, but the circuit system is not very safe; Finally, there is another case where the engine can't run after it is started. At this time, the cylinder, connecting rod and piston of the engine have been deformed, so it can be concluded that the engine has been scrapped. We can only replace the new engine or simply scrap the car.