For 1990-2009 cars only
Cleaning Procedure
- Clean the exhaust manifold in solvent.
- Dry the exhaust manifold with compressed air.
Caution: Refer to Safety Glasses Caution in the Preface section.
Inspection Procedure
- Inspect the left exhaust manifold for the following:
- Inspect the left exhaust manifold for the following:
- Repair or replace the left exhaust manifold and/or components as necessary.
- Measure the alignment or surface flatness of the exhaust manifold flanges, using a straight edge and a feeler gage. Exhaust manifold surface flatness must not exceed 0.254 mm (0.010 in).
- If the surface flatness is not within specifications, the exhaust manifold is warped and must be replaced.
| • | Damage or excessive corrosion to the exhaust manifold exterior (1) |
| • | Damage to the exhaust manifold mounting holes (2) |
| • | Damage to the threaded holes (3) for the heat shield |
| • | Damage to the exhaust manifold flange bolt holes (4) |
| • | Damage to the heated oxygen sensor (HO2S) hole threads (5) |
| • | Damage to the gasket sealing surfaces (1) |
| • | Damage or restrictions within the exhaust passages (2) |
