What Could Be the Reason for a Car Not Starting?

2 Answers
Jamie
07/24/25 1:58pm
Reasons why a car may not start: 1. Severe carbon buildup inside the vehicle's engine, leading to difficulty in starting and causing idle vibration; 2. Issues with the vehicle's ignition system—it's necessary to check the spark plugs and high-voltage wires. Abnormal operation of the ignition system can result in such situations, causing idle vibration or difficulty in starting; 3. Unstable fuel pressure in the vehicle's fuel system, where the fuel pump fails to supply fuel properly to the vehicle, leading to poor fuel atomization by the engine or inability to open the fuel injectors, resulting in cylinder misfire vibration or failure to start; 4. Faults caused by insufficient engine cylinder pressure—the vehicle's engine has exceeded its service life and thus cannot continue to operate, leading to intermittent idle vibration. In such cases, prompt repair at a service center is necessary.
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StMartin
08/11/25 7:54am
The car won't start, and I think the most common reason is a dead battery. Having driven for so many years, I've encountered this issue several times. Especially in winter or when the car has been parked for a long time with the lights left on, it's easy to drain the battery. When you turn the key, listen for any sounds: if it's completely silent, it's likely a battery issue; if there's a clicking sound but the engine doesn't turn over, the starter motor might be faulty. Another possibility is worn-out spark plugs or ignition coils, making it hard to start. A faulty fuel pump can also prevent the car from starting because it fails to supply fuel. A simple solution is to try jump-starting the car or checking if the battery terminals are loose. If that doesn't work, don't waste time tinkering—head straight to a professional repair shop to avoid further delays. Regular maintenance can help, such as checking the battery's lifespan every six months, changing the oil, and ensuring the ignition system is functioning properly.
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