RAM 2500 Truck 2WD L6-359 5.9L DSL Turbo VIN D FI (1997)
Valve Guide: Service and Repair
Inspection
1. Inspect the valve guides for scuffing or scoring.
2. Measure the valve guide bore. The bore diameter should be 8.019 - 8.089 mm (0.3157 - 0.3185 inch).
3. If the valve guide bores are larger than the worn limit, the cylinder head must be machined for service valve guides. New valve guides must be
reamed to size after they are installed.
NOTE: If the cylinder head needs service valve guides and valve seat inserts, the valve guides should be installed first.
