P0308

Tests 610 - 614:

Tests 615 - 618:

Tests 619 - 622:

Tests 623 - 624:

SYMPTOM
P-0308 CYLINDER #8 MIS-FIRE (GAS)

TEST NOTE
All symptoms listed above are diagnosed using the same tests. The title for the tests will be P-0307 #7 CYLINDER MIS-FIRE. (GAS)

WHEN MONITORED
With the engine running, after successfully performing a crank sensor learn.

SET CONDITION
When more than a 2% misfire rate is measured during two trips, or with a 10% to 30% misfire rate during one trip.

POSSIBLE CAUSES
- Mis-fire does not reoccur
- Other possible causes for mis-fire
- Cam, crank, valve timing, or vacuum problem
- Electronic ignition coil output low
- Engine mechanical problem
- Secondary ignition pattern irregular
- Fuel contamination
- Fuel pressure leak down out of specification
- Fuel pump amperage out of specification
- Fuel pump capacity out of specification
- Fuel pump pressure out of specification