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What is the reason for abnormal noise when starting the car?

1 Answers

LeRowan

07/29/25 7:43pm

The reasons for abnormal noise when starting the car: 1. The sound of the timing chain; 2. Insufficient lubrication during cold start, resulting in friction noise from metal parts; 3. The sound produced by the slipping of the motor belt during cold start. Check the tightness of the motor belt and see if there is any aging; 4. Poor retraction of the starter; 5. The battery has issues, either it is undercharged or its lifespan has expired. For example, forgetting to turn off the headlights when parking or not turning off the car's electrical appliances, leading to undercharging. In such cases, the battery needs to be replaced. It is recommended to go to a 4S shop or a professional auto repair shop promptly for the technician to inspect and determine the problem before carrying out the appropriate repair.

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