Exhaust Manifold Cleaning and Inspection without RPO K19

1. Clean the exhaust manifolds in solvent.

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

2. Dry the components with compressed air.
3. Inspect the exhaust manifolds for the following:

•	Damage to the gasket sealing surfaces

•	Loose or damaged exhaust gas recirculation (EGR) pipe fitting (if applicable)

•	Damage to the take down studs

•	Restrictions within the exhaust passages

•	Broken or damaged heat shields (if applicable)




4. Measure the alignment or surface flatness of the exhaust manifold flanges, using a straight edge and a feeler gauge. Exhaust manifold surface flatness must not exceed 0.254 mm (0.01 in).
5. If the surface flatness is not within specifications, the exhaust manifold is warped and must be replaced.