How Deep Water Can Damage the Engine?
2 Answers
Generally, 20 cm of water is not a problem for cars, but depths above 30 cm are usually more dangerous. Solutions for engine water damage: Stop the car in time: Understand the drainage situation of the garage in advance: If the car stalls in water, never try to start it and drive away. If the water level is still rising, seek help from passersby to push the car to a water-free road and wait for a tow truck. It is recommended that car owners park their vehicles in safe places during the rainy season. If parking in a garage, understand the garage's drainage situation beforehand. Timely repair: After water immersion, inspect all the car's wiring. Water exposure may affect the performance of certain components, and in severe cases, the car may not start normally. It is advisable to have the car checked at a professional repair shop after heavy rain to prevent future problems.
Regarding the issue of water damage to engines, I believe the key lies in the location of the air intake, which is usually below the bumper. When the water depth exceeds half of the wheel height, approximately 15 to 30 cm, water can reach that point. Once water enters the engine through the air intake, it can block the cylinders. Unlike air, water is not compressible, and if the piston cannot push the water, it may bend the connecting rods or damage the crankshaft. My experience is that extra caution is needed when driving sedans because their air intakes are lower than those of SUVs. In heavy rain, if you encounter standing water, don't force your way through; it's safest to turn off the engine and have the car towed away. If you feel the engine shaking or losing power while driving through deep water, turn off the ignition immediately and do not restart it, as this can cause more severe damage. Always check your vehicle's manual for specific information on water intake height.
