Important: The camshaft position actuator may make a slight tapping noise upon cold startup. This is due to the viscosity of the oil that has not yet warmed to proper operating temperatures, and should be considered normal for the first 3.5 minutes of cold engine operation.

Low oil pressure

1. Perform an oil pressure test. Refer to Oil Pressure Diagnosis and Testing .
2. Repair or replace as required.

Detonation or spark knock

Verify the correct operation of the knock sensor system. Refer to Electronic Ignition (EI) System Diagnosis .

Loose torque converter bolts

1. Inspect the torque converter bolts and flywheel.
2. Repair as required.

Cracked flywheel - automatic transmission

1. Inspect the flywheel bolts and flywheel.
2. Repair as required.

Excessive connecting rod bearing clearance

Inspect the following components, and repair as required:

Excessive crankshaft bearing clearance

Inspect the following components, and repair as required:

Malfunctioning camshaft position actuator--Improper viscosity oil, contaminated oil, or a plugged or missing camshaft position actuator filter can cause the camshaft position actuator locking pin to malfunction.

1. Verify correct oil viscosity by changing the engine oil and oil filter and reevaluating the concern.
2. Inspect for a missing or plugged camshaft position actuator filter.
3. If filter is missing, replace the filter, replace the camshaft position actuator, and change the engine oil and oil filter.
4. If filter is plugged, replace the filter, and change the engine oil and oil filter.
5. If no problem is found with the camshaft position actuator filter, replace the camshaft position actuator and change the engine oil and oil filter.