What Causes Abnormal Noise and Failure to Start When Starting the Car?
2 Answers
Abnormal noise and failure to start when starting the car can be caused by battery failure, starter motor malfunction, ignition system issues, etc. The specific analysis is as follows: Battery Failure: Unable to store power. If you only hear the sound of the starter when starting the car, it may be due to insufficient battery power preventing startup. Starter Motor Malfunction: The starter motor cannot drive the flywheel to rotate. When starting the vehicle, check whether the starter motor is functioning. Ignition System Issues: Spark plugs may be clogged or damaged. Deposits on the spark plugs, black deposits on the electrodes and inside the spark plugs indicate that the mixture in the cylinder is too rich, the spark plugs are eroded, or the insulator tip is cracked.
I've seen many cases where cars make strange noises when starting but fail to ignite, usually related to the starter motor or battery. Once, a friend's old car made a clicking sound when starting, but the car didn't move at all. It turned out that the starter motor's gear was stuck in the flywheel ring gear, and the wear was too severe for proper engagement. When the battery is old and the voltage is too low, the relay may buzz, but the motor lacks the power to turn. Another issue is a failed solenoid switch, causing strange noises accompanied by a failure to start. When encountering such problems, first try turning on the headlights. If the lights are dim, it indicates the battery is dead—use jumper cables for a quick rescue. If the lights are normal but the noise persists, check the starter motor circuit or replace the component. For safety, avoid forcing a start to prevent further damage to the flywheel. The key is to find a professional repair shop for a quick fix.
