What to Do When There's a Clicking Sound but the Engine Won't Start When Turning the Key?

[SanAna]

Here are the detailed solutions: 1. Use a household multimeter to measure the car battery voltage to see if it reaches 12V. If the voltage is less than 10V, the vehicle cannot be started, and you must use a charger to recharge it or jump-start the vehicle using another battery. 2. If the battery is normal, use a multimeter to check if there is power coming to the starter's power supply terminal. If there is no power, it indicates a power supply issue in the starting system, and you need to check for loose, broken, or aged wiring connections to the starter. If there is power to the starter but it still doesn't work, the starter relay might be faulty. Check if the starter relay is burned out (usually located in the engine compartment fuse box; refer to the instructions on the fuse box). 3. If the starter is functioning normally, check the ignition system. It's possible that the spark plug's ignition end is dirty with oil, so you need to remove and clean each one individually. Remember to reinstall them in the correct order to avoid poor ignition due to incorrect installation.