39. Intake Manifold Cleaning and Inspection

Intake Manifold Cleaning and Inspection (LAF, LEA, or LUK)





1. Clean the intake manifold (1) mating surfaces.

2. Inspect the intake manifold for damage.

3. Inspect the intake manifold for cracks near metallic inserts.

4. Clean and inspect the intake manifold insulator (2) for damage.





5. Inspect the crankcase ventilation passages (1) in the intake manifold face for blockage.

Warning:
Refer to Safety Glasses Warning Safety Glasses Warning.


6. Clean the crankcase ventilation passages with compressed air if necessary. Use a maximum of 172 kPa (25 psi) of air pressure.

7. Replace the intake manifold as necessary.