Manifold - Exhaust: Inspection
WARNING: This page is about a different car, the 2006 Dodge Magnum, 2006 Dodge Charger, and 2006 Chrysler 300. However, it is still accessible from the selected car via links, so may be relevant.
Inspect manifold for cracks.
Inspect mating surfaces of manifold for flatness with a straight edge. Gasket surfaces must be flat within 0.375 mm (0.0147 in.) around each port opening, and 0.75 mm (0.0295 in.) overall.