What's the reason for abnormal noise when starting but the engine won't ignite?

[SophieRose]

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.