What Causes the Engine to Fail to Start When the Starter is Normal?
2 Answers
The reasons why the engine fails to start when the starter is normal are: 1. Insufficient battery charge; 2. Loose connections of various wires; 3. Open circuit in the electromagnetic force coil on the solenoid switch or poor contact of the contact disc; 4. High operational resistance of the engine itself; 5. Open circuit in the starter relay coil or burnt contacts; 6. Frozen exhaust pipe or valve gumming; 7. Low fuel pressure or faulty fuel injector. Measures to prevent engine starting failure: 1. Check the battery condition; 2. Replace with suitable engine oil; 3. Replace spark plugs in time; 4. Check and adjust ignition timing; 5. Test fuel line pressure.
I've driven for over 20 years and encountered situations where the starter worked fine but the engine just wouldn't start. This usually involves several aspects: The fuel system is crucial - if the fuel pump fails or the fuel line is clogged, gasoline can't reach the engine combustion chamber, causing startup failure; Ignition system issues like worn spark plugs or faulty ignition coils can prevent the air-fuel mixture from igniting; A severely dirty air filter restricting airflow can also prevent starting. When electronic components like ECU sensors fail, incorrect signals cause the engine to make wrong judgments. Also, unstable battery voltage may allow the starter to turn but not provide enough power for ignition. I suggest first checking the fuel gauge to ensure the tank isn't empty and verifying battery connections are secure; In emergency situations, pull over safely rather than forcing it, and call for professional repair. Regular cleaning of fuel injectors and replacing spark plugs can reduce such troubles - safe driving is most important.
