Engine Will Not Start or Difficult Starting

1. Malfunctioning fuel pump drive control system.
2. Malfunctioning ignition control system.
3. No power supply to ECU.
4. Damaged control relay.
5. Disconnected or damaged vacuum hose.
6. Malfunctioning MPI system.
7. Malfunctioning injector.
8. Damaged resistor.
9. Improper fuel pressure.
10. Damaged ECU.
11. Broken, shorted or improperly secured harness connector.