Possible Causes
| Possible Causes |
|---|
| VVL SOLENOID SUPPLY O-RING DAMAGED OR MISSING |
| VVL SOLENOID STUCK ON/OPEN ALLOWING OIL PRESSURE TO ONE OR MORE ROCKER ARM |
| ROCKER ARM LOCK PIN STUCK RETRACTED OR BROKEN |
| ROCKER ARM IMPROPERLY INSTALLED/INCORRECT CLEARANCE BETWEEN A ROCKER ARM AND THE HIGH LIFT (CENTER) CAMSHAFT LOBE |
| EXCESSIVE WEAR ON A HIGH LIFT (CENTER) CAMSHAFT LOBE |
| WORN ROCKER ARM |
Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding. Refer to PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .