Impreza WRX STI F4-2.5L Turbo (2008)
Variable Valve Timing Solenoid: Removal and Replacement
Oil Flow Control Solenoid Valve
REMOVAL
1. INTAKE SIDE
Oil flow control solenoid valve is a unit with camshaft cap.
Refer to "Camshaft" for removal procedures.
2. EXHAUST SIDE
1. Set the vehicle on a lift.
2. Disconnect the ground cable from the battery.
3. Lift up the vehicle
4. Remove the under cover.
5. Remove the front exhaust pipe. (Right side only)
6. Remove the engine harness cover. (Right side only)
7. Disconnect the ground cable (A). (Left side only)
8. Disconnect the connector from the oil flow control solenoid valve, and remove the oil flow control solenoid valve from the cylinder head.
INSTALLATION
1. INTAKE SIDE
Refer to "Camshaft" for installation procedure.
2. EXHAUST SIDE
Install in the reverse order of removal.