What Causes Abnormal Noise and Failure to Start When Igniting the Car?
3 Answers
The reasons for abnormal noise and failure to start when igniting the car are: insufficient battery power or low voltage. 1. Before turning off the car, forgetting to turn off the headlights or some electrical equipment may cause the battery to drain, resulting in insufficient power. 2. If the battery has been used for too long and is severely aged, the voltage may be insufficient, requiring replacement. Additional information: The method to determine whether the battery has sufficient power is: Turn the ignition key to the ON position (for push-button start models, press the start button twice without stepping on the brake), turn on the headlights, and observe if the light dims significantly or does not light up at all. You can also press the horn; if the sound is noticeably weaker than usual or does not sound at all, it can be concluded that the battery power is insufficient.
My old car kept making creaking noises and wouldn't start the other day, which was really frustrating. It turned out the battery was almost dead. As batteries age, their capacity decreases, and insufficient voltage causes unstable starter motor operation, producing various abnormal noises—like the machine struggling but the engine failing to ignite. I quickly went to have the battery tested, and sure enough, it was below 12 volts. It's important to regularly check for loose or corroded battery terminals, especially in winter when issues are more likely to arise, to avoid getting stranded. Testing the voltage during routine maintenance can help detect problems early—safety first!
Weird noise when starting and failing to ignite is really annoying. I've personally experienced something similar - the starter motor squeals but the engine doesn't respond, most likely due to internal failure of the starter. Worn gears or a stuck solenoid can cause it to spin wildly without engaging the engine's flywheel, producing a sharp sound. I've tried gently tapping the starter housing as a temporary fix, but don't recommend doing this regularly - replacing the part is the proper solution. Avoid forcing continuous ignition attempts to prevent engine or battery damage. Getting a professional diagnosis at a repair shop saves both money and hassle.
