Service manual

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)
6. Inspect the lower intake manifold for the following:
• Damage to the gasket sealing
surfaces (1, 2 and 3)
• Restricted exhaust gas recirculation (EGR)
system passages (4)
• Restricted cooling system passages (5)
• Cracks or damage
• Damage to the threaded bolt holes
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Engine Engine Mechanical - 5.0L and 5.7L 6-95
2002 - Unit Repair (May 25, 2001)