Test NS-3A - Checking Engine Mechanical Systems
NOTE:
Perform TEST NS-2A before proceeding.
- Check for proper spark plug wire routing and firing order.
- Firing order is 1-2-3-4-5-6 with cylinder No. 1 located on passenger side of engine compartment (front of cylinder head).
If spark plug wire routing is incorrect, repair as necessary. Perform TEST VER-1A. If spark plug wire routing is correct, go to next step.
- Firing order is 1-2-3-4-5-6 with cylinder No. 1 located on passenger side of engine compartment (front of cylinder head).
- Turn ignition off. Check engine valve timing. If engine valve timing is okay, go to next step. If engine valve timing is not okay, repair engine valve timing as necessary. Perform TEST VER-1A.
- Remove all spark plugs. Inspect sparks plugs for wetness caused by fuel. If spark plugs are not wet, go to next step. If spark plugs are wet, clean spark plugs and go to next step.
- Check compression on all cylinders. See procedures in the ENGINE CONTROL SYSTEM & ENGINE COMPONENT TESTS article for compression specifications. If compression is within specification, no start condition is not caused by an electrical problem. Repair engine mechanical problem as necessary. Perform TEST VER-1A. If compression is not within specification, repair engine mechanical problem as necessary. Perform TEST VER-1A.