Important: Do not reuse the lower intake manifold gaskets or end seals.
- Clean the intake manifold in an approved solvent.
 
| •  | Clean debris out of all bolt holes. Clean the intake manifold
gasket sealing surfaces. | 
 
| •  | Clean all carbon from the EGR passages. | 
 
| •  | Clean all intake manifold ports. | 
 
Caution: Wear safety glasses in order to avoid eye damage.
- Dry the
intake manifold with compressed air.
 
- Inspect the following:
 
| •  | The intake manifold bolt holes (1) for cracks and/or damage | 
 
| •  | The MAP sensor sealing surface (2) for damage | 
 
| •  | The purge solenoid sealing surface (4) for damage. The
purge solenoid bolt has a sealer that may come off during removal of the bolt.
Ensure all sealant is removed from the bolt hole. | 
 
| •  | The intake manifold-to-cylinder head sealing surfaces (3)
for damage | 
 
| •  | The EGR adapter mounting surface for damage | 
 
| •  | The throttle body studs (5) for damage. Replace as necessary. | 
 
| •  | The throttle body mounting surface (6) for damage | 
 
| •  | The oil fill tube hole (7) for signs of leakage. Reseal
as necessary. | 
 
| •  | PCV port (8) for debris or varnish buildup |