Is it serious if the car hood is left open in the rain?
2 Answers
It is serious if the car hood is left open in the rain. Here is an extended explanation: 1. Hazards of an open hood: Rainwater can enter the air filter through the gaps between the car hood and headlights. If the drainage valve's function is reduced, rainwater may enter the engine through the intake pipe, causing the engine to fail to start. For minor cases, removing the distributor cap, drying it with a paper towel, and reinstalling it may suffice. For severe water ingress, professional repair is required. 2. Handling engine stalling due to water ingress: If the car stalls in water, never attempt to restart it, as this can cause irreparable damage to the engine. Ensure personal safety first, then immediately push the vehicle out of the deep water area to prevent the engine intake from sucking in more water, and park it in a safe place. If water enters the intake tract, the air filter must be replaced, and the water in the combustion chamber must be drained by removing the spark plugs.
That time I forgot to close the hood and got caught in the rain, the car wouldn't start the next day. Rainwater had seeped into the engine compartment, wetting the battery terminals and wiring, causing a short circuit that required towing to a repair shop for part replacements. I think this is quite dangerous – rainwater can cause metal to rust and corrode wire insulation, potentially leading to electrical leaks or circuit failures. Next time after rain exposure, I'll immediately open the engine hood, dry the battery, coils, and exposed wires with a dry cloth, then run the engine for a few minutes to let the heat evaporate moisture. If concerned, I'll visit a professional shop to check if the air filter got soaked, since rainwater carries sand particles that can clog pores. Long-term neglect could mean expensive electrical system repairs later.
