Diesel Data: Automotive Repair

Engine Will Not Start (MIL Works OK, No DTCs Set)




Engine will not start (MIL works OK, no DTCs set)

Diagnostic Procedure:

1. Test the battery. Testing and Inspection

2. Test the starter:

3. M/T model Starter Performance Test (M/T)

4. A/T model Starter Performance Test (A/T)

5. Check the fuel pressure. Testing and Inspection

6. Troubleshoot the fuel pump circuit. Testing and Inspection

Also check for:

- Low compression
- No ignition spark
- Intake air leaks
- Locked up engine
- Broken cam chain
- Fuel contamination