INSPECT INTAKE MANIFOLD
Using a precision straightedge and feeler gauge, measure the warpage of the contact surface of the cylinder head and intake air surge tank.
| Intake manifold side maximum warpage |
|---|
| 0.8 mm (0.031 in.) |
| Cylinder head side maximum warpage |
| 0.2 mm (0.008 in.) |
If the warpage is greater than the maximum, replace the intake manifold.
INSPECT EXHAUST MANIFOLD
Using a precision straightedge and feeler gauge, measure the warpage of the contact surface of the cylinder head.
| Maximum warpage |
|---|
| 0.7 mm (0.028 in.) |
If the warpage is greater than the maximum, replace the exhaust manifold.
Tech Tips
Maximum warpage of each installation surface:
0.3 mm (0.012 in.)