What are the reasons for a car starter getting wet and failing to start?
2 Answers
Possible reasons for a car failing to start after getting wet: 1. Spark plugs: Spark plugs are crucial to the car's ignition system, which in turn is vital for the engine's operation. The performance of the spark plugs directly affects the vehicle's overall working efficiency. 2. Battery depletion: The starter may begin to turn but lacks sufficient power, eventually making only strange noises without turning. Low temperatures in winter or forgetting to turn off certain electrical devices can prevent the car from starting, especially after prolonged short-distance, low-speed use in winter, which can cause the battery voltage to drop below the rated value, making normal operation impossible. If this happens, call a service station for assistance or temporarily jump-start the car, then ensure the battery is recharged at a service station. 3. Fuel flow obstruction: No fuel pressure in the engine's fuel supply line. This often occurs on extremely cold mornings due to long-term contamination of the fuel line. In very low temperatures, water and debris can mix and block the fuel line, preventing the car from starting. Emergency solutions: Move the car to a warmer environment and wait for it to start, or thoroughly clean the fuel line as a permanent fix.
The main reason why a starter motor fails to start after getting wet is related to water damaging the electrical system. Water conducts electricity, and once it seeps into the starter motor, it can cause short circuits in the wiring, preventing current from flowing normally through the brushes and magnetic coils, resulting in the starter motor being unable to turn or completely unresponsive. Another issue is corrosion; water can rust metal components such as gears or contacts, leading to poor contact over time and worsening ignition failure. Fuses may also blow as a protective mechanism. I once drove through water after rain and couldn't start the car, only to find the starter motor soaked. It's recommended to immediately disconnect the battery's negative terminal to prevent spontaneous combustion, then use compressed air to dry it or have a professional mechanic inspect and repair it. Be cautious when driving through waterlogged areas, as the starter motor is located at a lower position under the car and is prone to water intrusion in deep puddles. During maintenance, check for aging or damaged sealing gaskets to prevent leaks.
