What are the reasons for the starter turning but the engine failing to start?
2 Answers
The reasons for the starter turning but the engine failing to start are: 1. High-voltage spark present, but abnormal crankshaft position sensor or ignition coil; 2. Fuel pump not working properly, insufficient fuel pressure; 3. Fuel injector clogged; 4. Ignition system affected by moisture; 5. Severe carbon buildup in the engine. The solutions for the starter turning but the engine failing to start are: 1. Check whether the fuel delivery system provides sufficient fuel to the fuel injectors; 2. Check if the nozzle part of the fuel injector is clogged or if the solenoid valve is faulty; 3. Start the engine and spray water on the ignition system components and wires to check if the engine can run continuously, and repair any issues promptly.
I've been driving for decades and often encounter situations where the starter turns but the engine doesn't start. The most common issue is fuel-related, such as an empty fuel tank or a faulty fuel pump failing to supply fuel. Ignition system failures are also frequent; worn spark plugs or short-circuited ignition coils can prevent starting. Another time on the highway, it was a sensor issue—like a faulty crankshaft position sensor—preventing the engine from receiving the correct signals. Insufficient internal engine compression, such as problems with piston rings, is less common but still something to watch out for. I always remind myself not to panic; repeatedly trying to start can burn out the starter or battery. First, check the fuel gauge, then listen for ignition sounds, and if necessary, head to the repair shop promptly. Regularly changing the oil and maintaining ignition components can prevent such troubles.
