Exhaust Manifolds: Inspection
WARNING: This page is about a different car, the 1994 Plymouth Sundance, 1994 Plymouth Acclaim, 1994 Dodge Spirit, 1994 Dodge Shadow, and 1994 Chrysler LeBaron. However, it is still accessible from the selected car via links, so may be relevant.
Check manifolds for cracks and damage. Check mounting surfaces for warpage. Repair or replace manifold if warpage exceeds .008" (.20 mm).