For 1990-2009 cars only
Cleaning Procedure
- Clean the exhaust manifold in solvent.
- Dry the exhaust manifold with compressed air.
Warning: Refer to Safety Glasses Warning in the Preface section.
Inspection Procedure
- Inspect the exhaust manifold for the following:
- Inspect the exhaust manifold for the following:
- Repair or replace the 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 to the oxygen sensor threaded hole (1) |
| • | Damage or restrictions within the exhaust passages (2) |
| • | Damage to the gasket sealing surfaces (3) |
| • | Damage to the exhaust manifold mounting holes (4) |
| • | Damage or broken welds (1) |
| • | Damage or excessive corrosion to the exhaust manifold exterior (2) |
| • | Damage to the converter pipe gasket sealing surfaces (3) |
| • | Damage to the converter pipe mounting holes (4) |
