Inspection/Test
| Action
|
DEFINITION: Engine cranks OK, but does not start for a long time. Does eventually run, or may start but immediately dies.
|
Preliminary
|
• | Verify that the driver is using the correct starting procedure as described in the owners manual. |
|
Sensor/System
|
|
Fuel System
|
• | Verify there is adequate fuel. |
• | A faulty in-tank fuel pump check valve allows the fuel in the lines to drain back to the tank after the engine stops. Refer to
Fuel System Diagnosis . |
|
Ignition System
|
• | In order to properly inspect the spark plugs or to correct a condition, refer to the following procedures: |
• | Remove spark plugs and inspect for the following conditions: |
- | Verify that the spark plugs are of the correct type. |
• | Inspect for proper ignition voltage output with the
J 26792 HEI Spark Tester . |
• | An improper spark plug gap will cause a driveability condition. Gap the spark plugs using a wire gage gap tool. |
• | Determine the cause of the fouling before replacing the spark plugs. |
• | Inspect for damaged or misaligned spark plug boots. |
• | Inspect the electronic ignition (EI ) module for proper ground connection. |
|
Engine Mechanical
|
• | Inspect for the following conditions: |
- | Combustion chambers for excessive carbon buildup--Clean the chambers using top engine cleaner. Follow the instructions on the can. |
- | Incorrect basic engine parts--Inspect the following components: |
• | Inspect for excessive crankshaft endplay that will cause the CKP sensor reluctor wheel to move out of alignment with the CKP sensor. Refer to
Crankshaft and Bearing Cleaning and Inspection in Engine Mechanical. This could result in any of the following conditions: |
|
Additional
|
• | Inspect the air intake ducts for being collapsed, damaged, loose, improperly installed, or leaking. |
|