Engine Does Not Start

1. Defective ignition system.
2. Mechanical defect in engine.
3. Air intake system leaking.
4. Blockage in fuel system.
5. Defective relay.
6. Defective wire to injector.
7. Defective control relay.
8. Defective fuel pump.
9. Defective pressure regulator.
10. Cold start injector leaking or defective.
11. Defective thermo-time switch.
12. Defective supplementary air valve.
13. Defective air sensor.
14. Defective coolant temperature sensor.
15. Defective airflow meter.
16. Bad connection in wiring harness or bad ground.
17. Defective electronic control unit.