Express 1/2 Ton Van V8-305 5.0L VIN M SFI (1998)
Intake Manifold: Testing and Inspection
1. Clean the upper intake manifold in cleaning solvent.
2. Dry the upper intake manifold with compressed air.
3. Clean the lower intake manifold in cleaning solvent.
4. Dry the lower intake manifold with compressed air.
5. Inspect the upper intake manifold for the following:
^ Cracks or other damage to the exterior (1)
^ Cracking or damage in the gasket grooves (2 and 3)
^ Damage to the throttle body mounting surface (4)
^ Loose or damaged bolt hole thread inserts (5)
