No-Start Testing

Engine Cranks but Does Not Run

Description

The Engine Cranks but Does Not Run diagnostic table is an organized approach to identifying a condition that causes an engine not to start. The Engine Cranks but Does Not Run diagnostic table directs the service technician to the appropriate system diagnosis.

The Engine Cranks but Does Not Run diagnostic table assumes the following:

* The battery is completely charged. Refer to Battery Inspection/Test. Battery Inspection/Test
* The cranking speed is acceptable. Refer to Engine Cranks Slowly. Engine Cranks Slowly
* There is adequate fuel in the fuel tank.

Test Description

Step 1 - Step 8:

Step 9 - Step 12:

The number below refers to the step number on the diagnostic table.
8. The crankshaft position (CKP) sensor can fail in such a way that will cause the engine to crank but will not run. The engine will be able to run by using the cam sensor when the CKP sensor is disconnected.