Intake Manifold Clean and Inspect

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