With RPO, NC1 or NF7

Exhaust Manifold Removal - Right (W/RPO, NC1 or NF7)





1. Disconnect the vacuum harness from the A.I.R. valve and vacuum solenoid valve.





2. Disconnect the vacuum harness from the water crossover vacuum port.
3. Remove the A.I.R. vacuum harness.





4. Remove the A.I.R. valve pipe nuts from the exhaust manifold.
5. Remove the A.I.R. valve bolts from the mounting bracket.
6. Remove the A.I.R. valve.

Important: DO NOT reuse the A.I.R. valve pipe gasket.

7. Remove and discard the A.I.R. valve pipe gasket.





8. Remove the oxygen. sensor (1) and inspect the sensor for excessive deposits or damage: Replace the oxygen sensor if necessary.





Notice: The stud must be reinstated in the original location. The stud may remain attached to the nut when initially removed during exhaust manifold removal. In order to prevent exhaust leakage between the exhaust manifold and cylinder head the nut and stud combination must be reinstalled during exhaust manifold installation in the original location.

9. Remove the right exhaust manifold retaining nuts (3).

Important: DO NOT reuse the exhaust manifold gasket.

10. Remove the exhaust manifold and the gasket (1).





11. If equipped, remove the right coolant heater (1) as follows:
11.1. Remove the coolant heater retaining bolt.
11.2. Remove coolant heater from the cylinder block.