Exhaust Manifold Cleaning and Inspection
WARNING: This page is about a different variant/trim than selected.
Clean the exhaust manifold (1) and heat shields (2) in solvent.
- Dry the exhaust manifold with compressed air.
- Inspect the exhaust manifold-to-cylinder head gasket surface for excessive scratches or gouging.
- Inspect for a loose, damaged, or cracked heat shields (2).
- Inspect the heat shield bolts (3) for damaged threads.
Use a straight edge and a feeler gauge and measure the exhaust manifold cylinder head deck for warpage.
An exhaust manifold deck with warpage in excess of 0.25 mm (0.01 in) within the 2 front or 2 rear runners or 0.5 mm (0.02 in) overall, may cause an exhaust leak and may affect OBD II system performance. Exhaust manifolds not within specifications must be replaced.
WARNING:
Refer to Safety Glasses Warning .