What Causes a Car with No Faults, Fuel, and Spark to Fail to Start?
1 Answers
The main reasons for a car with no faults, fuel, and spark failing to start are issues in the starting system, ignition system, or fuel supply system. You can try the following emergency measures. If the car still doesn't start after attempting these, it is recommended to visit a 4S shop to run a diagnostic scan and check for any fault codes to troubleshoot one by one. The solutions are as follows: 1. Common faults in the starting system: Starter failure and battery depletion. Countermeasures: If the battery is severely depleted and cannot start the vehicle, you can use a multimeter to test the voltage. If the voltage is below 10V, the battery cannot start the car. Ideally, the voltage should be above 12V. In case of battery depletion, you can charge it using a charger or jump-start the engine. For starter failure, use a multimeter to check if the starter has supply voltage. If there is voltage but no action, it indicates the starter is damaged and needs replacement at a repair shop. 2. Ignition system fault: Ignition misfire. Countermeasures: This might be caused by fouled spark plugs. Try removing and cleaning the spark plugs, then reinstall them and check if the car starts normally. 3. Fuel supply issue: Possible gasoline flow obstruction or faulty injectors. Countermeasures: Place the car in a warm environment for a while, and it may start. Alternatively, thoroughly clean the fuel system. For vehicles with carburetors, check if the rubber seal at the engine interface is loose or leaking air.
