Intake Manifold: Testing and Inspection

INSPECTION

1. INSPECT INTAKE MANIFOLD SUB-ASSEMBLY UPPER.




a. Using a precision straightedge and feeler gauge, measure the surface contacting the intake manifold upper for warpage.

Maximum warpage: 0.10 mm (0.0039 in.)

If the warpage is greater than the maximum, replace the intake manifold sub-assembly upper.

2. INSPECT INTAKE MANIFOLD SUB-ASSEMBLY LOWER




a. Using a precision straightedge and feeler gauge, measure the surface contacting the cylinder head and intake manifold for warpage.

Maximum warpage: 0.15 mm (0.0059 in.)

If the warpage is greater than the maximum, replace the intake manifold sub-assembly lower.