Active Fuel Management Valve Lifters
WARNING: This page is about a different car, the 2012 GMC Yukon, 2012 Chevrolet Tahoe, and 2012 Cadillac Escalade. However, it is still accessible from the selected car via links, so may be relevant.
- Clean the components in cleaning solvent.
- Dry the components with compressed air.
- Inspect the valve lifters for the following conditions:
- Broken or collapsed spring (1)
- Worn pushrod socket (2)
- Plugged lubrication hole (3)
- Plugged lifter oil-switching hole (4)
- Flat spots on the roller (5)
- Worn or damaged roller bearing (6)
The roller should rotate freely with no binding or roughness.
- Scuffed or worn sides (7)
NOTE:
Components that are to be used again must be marked, sorted or organized for assembly.
WARNING:
Refer to Safety Glasses and Compressed Air Warning .