What's the reason for abnormal noise when starting but the engine won't ignite?
2 Answers
Vehicle starting with clicking sound but failing to ignite may be caused by insufficient battery power or inadequate battery voltage. Below is relevant information about vehicle starting: 1. Precautions: Cold starts require engine warm-up, with warm-up time depending on temperature - generally wait until idle returns to normal before driving. Always remember to fasten seat belts and check if driver's seat and rearview mirror positions are appropriate, adjusting if necessary. 2. Techniques: Before starting, wait about 5 seconds to allow the vehicle computer to complete checks, then start. After starting, the RPM will be around 2500, then gradually drop to normal 800 RPM after some time - this occurs because cold engines have higher idle speeds which normalize after warming up.
I've driven quite a few cars and encountered situations where there was abnormal noise during startup but the engine wouldn't start several times. The abnormal noise usually comes from the starter motor, making a clicking sound, indicating it's trying to turn but lacks sufficient power. This could be due to an aging battery with low voltage or damaged starter motor gears getting stuck. There are more reasons for failure to start, such as a broken fuel pump unable to deliver fuel, or issues with the ignition system like carbon buildup on spark plugs preventing normal ignition. It's recommended to first use a multimeter to test the battery voltage; if it's below 12 volts, it needs charging or replacement. If the engine only makes a few noises and then stops during startup, avoid repeated attempts as it can easily burn out the starter motor. Seek professional repair inspection as soon as possible. Last time my car had this issue, it was because the fuel filter was clogged, and it was fixed after replacement. Regular maintenance of the battery and fuel system can prevent such troubles.
