Top 10 7.3 Diesel Hard Start / No Start Diagnostic Procedures

Top 10 things to check when diagnosing a Hard or No start condition on a 7.3 Power Stroke Diesel.

There are quite a few things that may cause the 7.3 V8 diesel engine to not start. Usually it’s pretty basic stuff, but tracking down the issue can be a headache without a good starting point. If your Ford 7.3L Power Stroke diesel engine isn’t starting check the following items:

1. Visual Engine / Chassis Inspection
2. Check Engine Oil Level
3. Intake / Exhaust Restriction
4. Sufficient Clean Fuel
5. Fuel Pump Pressure
6. Perform KOEO On-Demand Self Test
7. Retrieve / Clear Continuous DTCs
8. KOEO Injector Electrical Self Test
9. Check VPWR During Cranking
10. Glow Plug System Operation

• Visual Engine / Chassis Inspection
• Check Engine Oil Level
• Check for Intake / Exhaust Restriction
• Sufficient Clean Fuel
• Fuel Pump Pressure
• Perform KOEO On-Demand Self Test
• Retrieve / Clear Continuous DTCs
• KOEO Injector Electrical Self Test (Injector Buzz Test)
• Check VPWR During Cranking
• Glow Plug System Operation