For 1990-2009 cars only
Cleaning Procedure
- Clean the exhaust manifold exterior 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 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 exhaust manifold-to-cylinder head gasket sealing surface (1) |
| • | Damage or broken welds (2) |
| • | Damage to the support bracket (3) |
| • | Damage to the threads in the exhaust pipe flange (4) |
| • | Damage to the exhaust pipe flange sealing surface (5) |
| • | Damage or restrictions within the exhaust passages (6) |
| • | Damage to the oxygen sensor threaded hole (1) |
| • | Damage to the threads for the heat shield mounting (2) |
| • | Damage or excessive corrosion to the exhaust manifold exterior (3) |
| • | Damage to the exhaust manifold-to-cylinder head mounting holes (4) |
