For 1990-2009 cars

### Removal Procedure

1. Remove the fuel injector sight shield. Refer to Fuel Injector Sight Shield Replacement.
2. Remove the intake manifold insulator.
3. Disconnect the positive crankcase ventilation (PCV) fresh air pipe (1) from the intake manifold.
4. Disconnect the PCV air pipe from the camshaft cover.

### Installation Procedure

1. Connect the PCV air pipe (1) to the camshaft cover valve.
2. Connect the PCV air pipe to the intake manifold.
3. Remove the intake manifold insulator.
4. Install the fuel injector sight shield. Refer to Fuel Injector Sight Shield Replacement.