What is the treatment method for water entering a car engine?
3 Answers
Treatment methods for water entering a car engine: 1. If the engine has only mixed with water vapor entering through the air filter, simply clean the water vapor from the air filter, throttle valve, and cylinder; 2. If a significant amount of water has entered the engine but does not affect normal driving, replace the engine oil and clean the related engine components; 3. If a large amount of water has entered the engine and it cannot operate after starting, replace the engine with a new one. An important point to remember after water enters the engine is not to force-start a stalled vehicle, as restarting under submerged conditions often causes engine damage.
A few months ago, I was driving in heavy rain and passed through a waterlogged section. Sensing something was wrong, I quickly stopped. If water enters the engine, the most crucial thing is not to start it, as this could damage internal components, such as bending the connecting rods or damaging the valves. That time, I saw the water level had already risen halfway up the wheel hubs, so I immediately turned off the ignition and switched on the hazard lights to alert other drivers, then got out to inspect the situation. I promptly contacted my insurance company or roadside assistance to arrange for a tow truck to take the car to a professional repair shop. After the tow truck arrived, the experts would open the hood to check if there were water traces in the oil pan or if the air filter was wet, and if necessary, disassemble, clean, or replace parts. The subsequent repairs might cost a fair amount, but it’s worth it because forcing a start would lead to even higher repair costs. I recommend checking your route in advance when driving in heavy rain, avoiding low-lying areas, and not taking risks if the water depth exceeds 20 cm—safety always comes first.
Last time my friend's car had water in the engine, I helped him deal with it quickly and decisively. Immediately turn off the engine and stop the car, never attempt to restart the engine as it can draw water into the cylinders and damage the pistons. After getting out of the car, turn on the hazard lights to warn others and ensure your own safety by avoiding the water. Call a tow truck or contact a repair shop right away, explain the situation and they will know how to handle it. While waiting for the tow truck, check the engine compartment for obvious signs of water ingress, but don’t tamper with the machinery. Once towed to the shop, the mechanic will drain the oil and any water mixture, clean the entire system, and may need to replace spark plugs or oil seals. The whole process requires decisive action, as delays significantly increase the risk of corrosion. For prevention, avoid driving through deep water—don’t risk saving time only to cause major damage. Timely handling can save on repair costs.
