For 1990-2009 cars

### Removal Procedure

1. Turn OFF the ignition.
2. Disconnect the vacuum hoses from the fuel pressure regulator and positive crankcase ventilation valve.
3. Remove the positive crankcase ventilation valve.

### Installation Procedure

1. Install the positive crankcase ventilation valve.
2. Connect the vacuum hoses to the fuel pressure regulator and the positive crankcase ventilation valve.