Cause | Correction | ||||||
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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 |
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Detonation or spark knock | Verify the correct operation of the knock sensor system. Refer to Electronic Ignition (EI) System Diagnosis . | ||||||
Loose torque converter bolts |
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Cracked flywheel - automatic transmission |
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Excessive connecting rod bearing clearance | Inspect the following components, and repair as required:
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Excessive crankshaft bearing clearance | Inspect the following components, and repair as required:
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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. |
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