Impreza 2.5 RS Sedan AWD F4-2.5L SOHC (2002)
Valve Clearance: Testing and Inspection
INSPECTION
CAUTION: Inspection and adjustment of valve clearance should be performed while engine is cold.
1. Set the vehicle onto the lift.
2. Lift-up the vehicle.
3. Remove the under cover.
4. Disconnect the ground terminal from battery.
5. Lower the vehicle.
6. Remove the timing belt cover (LH).
7. When inspecting #1 and #3 cylinders:
1. Remove the air intake duct as a unit.
2. Remove the resonator chamber.
3. Disconnect the spark plug cords from spark plugs RH side.
4. Disconnect the PCV hose from rocker cover (RH).
5. Remove the bolts, then remove the rocker cover (RH).
8. When inspecting #2 and #4 cylinders:
1. Remove the battery and battery carrier.
2. Disconnect the window washer motor connectors.