Valve Lifters and Guides Cleaning and Inspection

WARNING: This page is about a different variant/trim than selected.

CAUTION: Refer to SAFETY GLASSES CAUTION in Cautions and Notices.

IMPORTANT: Parts that are to be reused must remain sorted or organized in order to return them to their original location.

Fig 1: View Of Valve Lifters Inspection Areas

Courtesy of GENERAL MOTORS CORP.

Inspect the valve lifters for the following:
- A damaged, mispositioned or broken clip (1)
- A scored or worn pushrod socket (2)
- A severely scuffed or worn lifter body (3)
  If the valve lifter body shows scuffing or wear, inspect the engine block valve lifter bores for wear or damage.
- Flat spots on the roller (4)
- A loose pin (5)
- A plugged oil hole (6)
If flat spots are found on the lifter(s), inspect the corresponding lobe on the camshaft for damage.

Fig 2: View Of Valve Lifter Guides

Courtesy of GENERAL MOTORS CORP.

Inspect the valve lifter guides for the following:
- Excessive guide slot side wear
- Cracks or damage

Fig 3: View Of Valve Lifter Guide Retainer

Courtesy of GENERAL MOTORS CORP.

Inspect the valve lifter guide retainer for the following:
- Wear, damage, or stress cracking in the leg areas
- Wear or damage around the retainer bolt holes