Hd11 Check For Base Engine Concerns
NOTE:
The engine temperature may affect the results.
- This step determines if there are any base engine concerns that may have caused the misfire DTC or drive concern.
- Carry out the following tests in order to evaluate base engine integrity:
- Carry out engine compression and leakdown tests. Refer to the MECHANICAL - GENERAL
- Carry out valve train analysis. Refer to the MECHANICAL - GENERAL
- Check the positive crankcase ventilation (PCV) system. Refer to the MECHANICAL - GENERAL
- Check for possible leakage points. Refer to the MECHANICAL - GENERAL
- Is a concern present?
- Yes:
REPAIR as necessary. REFER to the MECHANICAL - GENERAL
.
CLEAR the DTCs. REPEAT the self-test.
- No: GO to HD12 .
- Yes:
REPAIR as necessary. REFER to the MECHANICAL - GENERAL
.