How to completely drain water from the cylinder?
2 Answers
If the engine has only mixed with water vapor and taken in water through the air filter, simply clean the water vapor from the air filter, throttle valve, and cylinder. If water enters the engine cylinder but does not affect normal driving, and there is a small amount of water in the engine oil or gasoline, it is necessary to replace the engine oil and clean the related engine components. If a large amount of water enters the engine cylinder, causing severe damage to engine components, a new engine must be replaced.
Last time my engine cylinders got flooded was from driving through deep water on a rainy day. After parking, I immediately turned off the engine, removed the spark plugs, and slowly turned the crankshaft with a tool to push the water out through the holes. Then I used a straw or manual pump to suck out any remaining water droplets in the cylinders. Don't forget to check the oil color - a milky appearance indicates water contamination. In that case, you'll need to replace both the engine oil and oil filter with new ones. Finally, reinstall the spark plugs and test drive the vehicle, paying close attention to any abnormal engine sounds during startup. It's recommended to perform a cylinder compression test afterward to ensure proper sealing. If doing this yourself, be extra careful with the crankshaft bolts - over-tightening can damage the threads.