F 350 2WD Super Duty V8-7.3L DSL Turbo VIN F (1999)
Valve: Testing and Inspection
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 head thickness for wear