Engine Cranks But Will Not Start

1. No fuel supplied to injectors.
2. Defective air flow meter fuel pump switch.
3. Vacuum leak in air intake lines.
4. Insufficient spark.
5. Incorrect ignition timing.
6. Clogged air filter element.
7. Defective air valve.
8. Defective spark plugs.
9. No power to EFI computer.