Intake Manifold: Testing and Inspection

1. INSPECT INTAKE AIR SURGE TANK ASSEMBLY

(a) Using a precision straightedge and feeler gauge, measure the warpage on the contact surface of the intake manifold.





Maximum warpage:

2.5 mm (0.098 in.)

If the warpage is greater than the maximum, replace the surge tank.

2. INSPECT INTAKE MANIFOLD

(a) Cylinder head side:





(1) Using a precision straightedge and feeler gauge, measure the surface contacting the cylinder head for warpage.

Maximum warpage:

0.1 mm (0.003 in.)

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

(b) Surge tank side:

(1) Using a precision straightedge and feeler gauge, measure the surface contacting the surge tank for warpage.

Maximum warpage:

0.1 mm (0.003 in.)

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