Intake Manifold: Testing and Inspection

1. Inspect intake manifold.
Using a precision straight edge and feeler gauge, measure the surface contacting the cylinder head and air intake chamber for warpage.

Maximum warpage:
Air intake chamber side: 0.15 mm (0.0059 inch)
Cylinder head side: 0.08 mm (0.0031 inch)

If warpage is greater than maximum, replace the manifold.