C 2500 Truck 2WD V8-5.7L VIN R (1997)
Intake Manifold: Testing and Inspection
1. Clean the following parts:
-
Gasket surfaces
-
Intake passages of the manifold
-
Coolant passages of the intake manifold
-
EGR passages
2. Inspect the lower aluminum portion of the manifold for the following conditions:
-
Cracks or damage to the housing
-
Restricted EGR passages
-
Damage to the gasket sealing surfaces
3. Inspect the upper composite portion of the manifold for the following conditions:
-
Cracks or damage
-
Broken bolt/stud mounting bosses
-
Cracked or damaged gasket retaining groove