Subaru Impreza 3 / Impreza WRX / Impreza WRX STI. Manual — part 123

FU(w/o STI)-19

Intake Manifold

FUEL INJECTION (FUEL SYSTEMS)

18) Disconnect the vacuum hose from nipple.

19) Disconnect the air control hose (A) from the

waste gate actuator, and loosen the clamp which

holds the intake duct to the turbocharger.

20) Disconnect the connector (A) from the PCV

hose assembly A and the connector (B) from the

knock sensor.

21) Disconnect the connector from the PCV hose

assembly B and PCV hose assembly C.

22) Disconnect the bulkhead harness connectors

from the engine harness connectors.

23) Remove the engine harness connector from

the engine harness bracket.

FU-05709

FU-05866

(A)

FU-05708

(A)

(B)

FU-06534

FU-06604

FU-06605

FU(w/o STI)-20

Intake Manifold

FUEL INJECTION (FUEL SYSTEMS)

24) Disconnect the connector (A) from the engine

coolant temperature sensor, connector (B) from the

oil pressure switch, and connector (C) from the

crankshaft position sensor.

25) Disconnect the connector from power steering

pump switch.

26) Disconnect the connector from the secondary

air combination valve.

27) Disconnect the connector from camshaft posi-

tion sensor.

28) Disconnect the connector from the oil flow con-

trol solenoid valve.

29) Lift up the vehicle.

FU-05711

(C)

(B)

(A)

FU-04598

FU-05712

FU-04616

FU-06535

FU(w/o STI)-21

Intake Manifold

FUEL INJECTION (FUEL SYSTEMS)

30) Disconnect the connector from ignition coil.

31) Lower the vehicle.

32) Disconnect the connector from the front oxygen

(A/F) sensor, and remove the clip (A) and stay (B)

which hold the engine harness to the rocker cover

RH.

33) Attach ST to the fuel delivery pipe and push ST

in the direction of arrow mark to disconnect the fuel

delivery hose.

ST 42099AE000 QUICK CONNECTOR RE-

LEASE

CAUTION:

• Be careful not to spill fuel.

• Catch the fuel from hoses using a container

or cloth.

34) Disconnect the fuel return hose using the ST.

ST 18371AA000 CONNECTOR REMOVER
CAUTION:

• Be careful not to spill fuel.

• Catch the fuel from hoses using a container

or cloth.

(1) Attach ST to the fuel return pipe as shown in

the figure.

FU-06536

FU-05714

(A)

(B)

(A) Fuel delivery hose
(B) Fuel return hose

(C) Evaporation hose

FU-06537

(C)

ST

(B)

(A)

ME-04969

ST

FU(w/o STI)-22

Intake Manifold

FUEL INJECTION (FUEL SYSTEMS)

(2) Insert the front side of ST into the quick con-

nector.

(3) Insert the back side of ST into the quick con-

nector and push ST in the direction of arrow

mark to disconnect the fuel return hose.

35) Remove the clip and disconnect the evapora-

tion hose from the fuel pipe.

36) Remove the intake manifold from cylinder

head.

B: INSTALLATION

1) Install the intake manifold onto cylinder heads.
NOTE:

Use a new gasket.
Tightening torque:

25 N·m (2.5 kgf-m, 18.4 ft-lb)

ME-04970

ST

ME-04971

ST

FU-04611

FU-06538

FU-06538