Intake Manifold Clean and Inspect

1. Inspect the intake manifold for damage.





2. Inspect the intake manifold for cracks near the mounting holes (1-4).
3. Inspect the crankcase ventilation passages for any blockage and clean as necessary.





4. Clean the intake manifold mating surfaces.
5. Use a straight edge and a feeler gauge and measure the intake manifold mounting surface for warpage.

^ Intake Manifold Maximum Warpage: 0.10 mm (0.0039 inch)

6. If the warpage is greater than the maximum, replace the intake manifold.