41. Intake Manifold Clean and Inspect

Intake Manifold Cleaning and Inspection
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 gage 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.