What are the reasons why a car cannot run?

[JudahLynn]

The reasons why a car cannot run: 1. The ignition timing advance angle of the cylinder is inaccurate; 2. The spark plugs are not working or there is a cylinder misfire; 3. The fuel supply system is not smooth or blocked, and the fuel pump has an air leak; 4. The clutch engagement is incomplete or the clutch has damaged rivets causing eccentric engagement; 5. The engine crankshaft clearance is too large; 6. The clearance between the output shaft and the differential is too large or damaged; 7. Check for any cracking or backfiring sounds. If present, it indicates the air-fuel mixture ratio is too rich or too lean, and the mixture ratio should be adjusted; 8. The fuel injectors are too dirty or the carburetor is too dirty. For fuel-injected cars, clean the injectors. For carbureted cars, disassemble and clean the carburetor and adjust the fuel level.