Valve Lifter Cleaning and Inspection
WARNING: This page is about a different car, the 2020 Buick Regal and 2019 Buick Regal. However, it is still accessible from the selected car via links, so may be relevant.
- CAUTION:
Refer to Valve Lifter Priming Caution .
Inspect the hydraulic lash adjuster (HLA) in the following areas:
- A plugged oil passage (1)
- A scored or worn camshaft follower pivot area (2)
- A damaged or broken retainer (3), some applications
- A severely scuffed or worn HLA body (4)
- Inspect the duel feed hydraulic lash adjuster (DFHLA) in the following areas:
- A plugged oil passage (5)
- A scored or worn camshaft follower pivot area (6)
- A damaged or broken retainer (7), some applications
- A severely scuffed or worn DFHLA body (8)
- Replace the HLA or DFHLAs as necessary.