What are the reasons for a car not starting the day after wading through water?
2 Answers
Vehicle not starting the day after wading through water can be due to: battery depletion, ignition system issues. Below are the relevant explanations: 1. Battery depletion: The first thing to consider when a car won't start is the battery, as a depleted battery directly leads to difficulty starting or failure to start. Generally, poor contact at the battery terminals or issues with the battery management system can cause such problems. 2. Ignition system: The first component to check is the car's 'ignition system', which is also crucial for starting the car. If the ignition coil or spark plugs are faulty, it can also prevent the car from starting. 3. Additional information: If the battery is depleted in an automatic transmission car, assistance from another car can be sought. With both cars turned off, connect the positive and negative terminals with jumper cables, then start the fully charged car and press the accelerator without engaging the gear, followed by attempting to start the depleted car.
I encountered this issue the other day when my car wouldn't start the morning after driving through water, almost making me late for work. The main reasons are water's destructive intrusion: engine flooding can cause cylinder deformation or piston seizure, preventing combustion; a wet ignition system leads to spark plug short circuits and failure to ignite; submerged electrical wiring accelerates corrosion, blowing fuses or damaging the ECU board; water ingress in the air intake system causes blockages, reducing oxygen supply; contaminated fuel systems prevent fuel pump operation or dilute fuel with water in the tank. If water doesn't cause immediate issues, it's due to moisture diffusion, with problems appearing the next day—wait patiently for rescue and avoid repeated starting attempts to prevent further damage, then promptly seek repairs for safety. Also check battery terminal corrosion, as older cars are particularly prone to such issues.