What Are the Reasons for a Vehicle Failing to Start with Abnormal Noises?
2 Answers
Reasons for a vehicle failing to start with abnormal noises: insufficient battery power; battery voltage too low; battery failure; fuel supply system failure; ignition system failure; incorrect gear position. Solutions for a vehicle failing to start with abnormal noises: charge the battery; replace the battery; shift to P gear before starting; replace the ignition system; replace the fuel supply system. Method for starting a vehicle: insert the key and turn on the ignition switch; depress the clutch pedal and shift into first gear; release the handbrake and lift the clutch pedal, then press the accelerator. Precautions for vehicle starting: the starter should not operate for more than 5 seconds each time, and a 2-minute pause should be observed before the next attempt to allow the battery to recover. If a third consecutive start is needed, wait for 15 minutes after checking and resolving the issue before attempting again. In winter or low-temperature conditions, especially for older vehicles, take necessary measures and avoid continuous cranking. Immediately cut off the starter control circuit after the engine starts to stop the starter. Carefully inspect the surroundings of the vehicle, checking for obstacles under and around the vehicle. Cold starts require engine preheating, with the duration depending on the temperature—generally, wait until the idle speed returns to normal before moving off. Always fasten the seatbelt and check if the driver's seat and rearview mirrors are properly adjusted.
The car won't start and makes strange noises, which is usually related to the starting system. Having worked in the auto repair industry for over ten years, the most common issues I encounter with this problem are insufficient battery power, causing the starter to turn slowly and groan; or a faulty starter itself, such as worn carbon brushes, producing a harsh squealing sound. Another reason could be a loose or broken engine belt, causing a flapping noise when starting. Ignition system problems may also cause abnormal noises, like carbon buildup on spark plugs leading to ignition failure, resulting in the motor spinning freely with a clicking sound. It's recommended to first check if the battery terminals are loose and clean them; if the strange noise is accompanied by weak starting, measure the battery voltage—if it's below 12 volts, it should be replaced. Don't overlook these small details, or they could damage more components, such as burning out the starter, which would cost a lot to repair. For safety, stop the car immediately and call for professional help—avoid repeatedly trying to start the car to prevent fire hazards. Regular maintenance of the battery and belts is key to prevention, extending the car's lifespan and saving both hassle and money.
