No Start or Hard Start When Cold

CHECK
- Defective AFC relay.
- Fuel pump not operating.
- Cold start valve stuck closed.
- Leaking cold start valve.
- Defective temperature time switch.
- Auxiliary air regulator stuck closed.
- Defective intake air sensor.
- Defective fuel pump relay.
- Intake system leaking.
- Defective fuel injectors.
- Low fuel pressure.
- Defective temperature sensor.
- Faulty electrical connection in wiring harness or electrical connectors.