Can I Start the Car If It's Flooded?
2 Answers
No. Theoretically, as long as the water does not submerge the air intake, the engine won't be affected. However, there are too many unpredictable factors. For example, when another car passes by, it may create waves that could splash into the air intake. Additionally, you must drive slowly through the water, and the underwater environment is unknown—even if the surface appears calm. If the car stalls while driving through water, you must not attempt to restart it. Extended Information: During heavy rain, car owners should avoid driving if possible. If driving is necessary, they should steer clear of low-lying areas, such as underpasses, overpasses, or poorly drained roads. Before setting out, plan your route and timing carefully, especially during rush hours, to avoid these low-lying areas where water can accumulate quickly, potentially leaving your car immobilized.
Never try to start the engine after your car is flooded! I personally witnessed a friend making this mistake. When his car was submerged in rainwater, he hastily attempted to start it, only to hear a dull thud from the engine—it was completely destroyed. The mechanic later explained that when water enters the cylinders, the pistons can't compress the liquid, which can bend the connecting rods or even shatter the pistons. Such damage isn't covered by insurance. Moreover, powering up the entire electronic system after it's been soaked poses a catastrophic risk of short circuits. The safest approach is to call for a tow truck and let professional technicians inspect the engine and electrical systems. Remember, the more you try to start a flooded car, the greater the damage—a costly lesson learned the hard way.
