41. Intake Manifold Cleaning and Inspection

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. Refer to Engine Mechanical Specifications (Specifications).
6. If the warpage is greater than the maximum, replace the intake manifold.