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.

Important: In some cases, the stud will remain attached to the nut during removal. If this happens, you must install the nut/stud combination in its ORIGINAL location or an exhaust leak could occur.





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. It 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.