What Causes a Car to Fail to Start After Rain?

[MacMaggie]

The reason a car fails to start after rain is due to moisture affecting the engine's spark plugs. Below are specific details about why a car may not start after rain: 1. Solution: Remove the spark plugs, disconnect the fuel injector connector, start the engine to drain any accumulated water in the cylinders, replace the engine oil, then reinstall the spark plugs and fuel injector connector before starting the engine. It is important to note that if the car fails to start on a rainy day, avoid repeatedly attempting to start it, as this can easily damage the valves. 2. Prevention Methods: Check if the spark plugs are leaking electricity, inspect whether the spark plug covers are cracked or loose, examine if the connection between the filter and carburetor is broken, check if the valves are too tight, verify the ignition system is functioning properly, and avoid driving the car into deep water during rainy days to prevent water from entering the engine.