Valve Visual Inspection Procedure

WARNING: This page is about a different car, the 2009 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Identifying Inspection Points For Valves Damage

Courtesy of GENERAL MOTORS CORP.

Inspect the valve for damage from the head to tip for the following conditions:
- Pitting in the valve seat area (1)
- Lack of valve margin (2)
- Bending in the valve stem (3)
- Pitting or excessive wear in the stem (4)
- Worn valve key grooves (5)
- Worn valve tip (6)
Replace the valve if any of these conditions exist.