What Causes Abnormal Noise During Starter Ignition?
2 Answers
The causes of abnormal noise during starter ignition are engine belt issues and engine compartment problems. Below are specific explanations for the above reasons: Engine Belt Issues: Check the tightness of the engine belt. If there is a problem, it is recommended to replace it. Alternatively, if the belt is too dirty, cleaning it with water or lubricating it with a lubricant can eliminate the abnormal noise. Engine Compartment Problems: Open the front cover and carefully inspect for any foreign objects. Blockages caused by foreign objects can lead to abnormal vehicle noise. Develop a habit of regularly checking the engine compartment. After the engine starts, the flywheel drives the starter gear to operate, causing abnormal noise. If the noise is only slight, it can be ignored. However, if it is severe, repair or replacement of the starter motor is necessary.
I also encountered abnormal noise during startup last time, which sounded like a rattling noise. That's most likely an issue with the starter motor, such as aging motor gears or wear on the flywheel ring gear, causing incomplete engagement during startup and resulting in a hard grinding sound. Insufficient battery power is also a contributing factor—low voltage causes the motor to rotate slowly, leading to gear grinding noises, which are more noticeable in winter due to condensation exacerbating lubrication issues. My car had the same issue last month; after inspection, it was found that the motor bearings were rusted, and replacing the parts fixed the problem. Loose belts or a faulty tensioner pulley can also produce similar noises, which might be mistaken for startup sounds. I recommend getting it diagnosed at a repair shop as soon as possible. Small issues left unattended can lead to motor failure, costing you a lot. During regular maintenance, pay attention to motor cleanliness and battery condition—safety first.
