Valve Inspection

1.

Inspect the following valve areas:
- 1.
  
  The end of the stem for grooves or scoring.
- 2.
  
  The valve face and the edge for pits, grooves or scores.
- 3.
  
  The valve head for signs of burning, erosion, warpage and cracking.
- 4.
  
  The valve margin for wear.

GFD87178

Courtesy of FORD MOTOR COMPANY