For 1990-2009 cars

Important:

• | Do not reuse the exhaust manifold-to-cylinder head gaskets. Upon installation of the exhaust manifold, install a NEW gasket. An improperly installed gasket or leaking exhaust system may effect On-Board Diagnostics (OBD) II system performance.

• | Inspect the exhaust manifold for cracks near the mounting holes (1-5).

1. Clean the exhaust manifold with solvent.

Caution: Wear safety glasses in order to avoid eye damage.

2. Dry the exhaust manifold with compressed air.
3. Clean the exhaust manifold mating surface.
4. Use a straight edge and a feeler gage and measure the exhaust manifold mounting face for warpage.

Exhaust Manifold Maximum Warpage
0.70 mm (0.0276 in)

5. If the warpage is greater than the maximum, replace the exhaust manifold.