Subaru Impreza 3 / Impreza WRX / Impreza WRX STI. Manual — part 140

FU(w/o STI)-87

Fuel Damper

FUEL INJECTION (FUEL SYSTEMS)

30.Fuel Damper

A: REMOVAL

WARNING:

Place “NO OPEN FLAMES” signs near the

working area.
CAUTION:

• Be careful not to spill fuel.

• Catch the fuel from hoses using a container

or cloth.

1) Release the fuel pressure. <Ref. to FU(w/o STI)-

65, RELEASING OF FUEL PRESSURE, PROCE-

DURE, Fuel.>

2) Disconnect the fuel delivery hose (A) and fuel re-

turn hose (B) from the fuel damper, and remove the

fuel damper.
NOTE:

Fuel dampers on delivery side and return side are

different. Be careful not to confuse them.

B: INSTALLATION

Install in the reverse order of removal.
NOTE:

• Fuel dampers on delivery side and return side

are different. Be careful not to confuse them.

• For the information about connecting the fuel de-

livery hose and fuel return hose, refer to “Fuel De-

livery, Return and Evaporation Lines”. <Ref. to

FU(w/o STI)-93, CONNECTING FUEL DELIVERY

HOSE, FUEL RETURN HOSE AND FUEL HOSE,

INSTALLATION, Fuel Delivery, Return and Evapo-

ration Lines.>

FU-05837

(A)

(B)

(A)

(B)

FU(w/o STI)-88

Purge Damper

FUEL INJECTION (FUEL SYSTEMS)

31.Purge Damper

A: REMOVAL

WARNING:

Place “NO OPEN FLAMES” signs near the

working area.

1) Remove the bolts which secure the purge damp-

er to the purge damper bracket.

2) Disconnect the evaporation hose from the purge

damper and remove the purge damper.

B: INSTALLATION

Install in the reverse order of removal.
Tightening torque:

13 N·m (1.3 kgf-m, 9.6 ft-lb)

C: INSPECTION

1) Check that the purge damper has no deforma-

tion, cracks or other damages.

2) Check that the evaporation hose has no cracks,

damage or loose part.

FU-03365

FU-05839

FU-03365

FU(w/o STI)-89

Fuel Delivery, Return and Evaporation Lines

FUEL INJECTION (FUEL SYSTEMS)

32.Fuel Delivery, Return and Evaporation Lines

A: REMOVAL

WARNING:

Place “NO OPEN FLAMES” signs near the working area.
CAUTION:

Be careful not to spill fuel.

1) Release the fuel pressure. <Ref. to FU(w/o STI)-65, RELEASING OF FUEL PRESSURE, PROCEDURE,

Fuel.>

2) Open the fuel filler lid and remove the fuel filler cap.

3) Remove the floor mat. <Ref. to EI-71, REMOVAL, Floor Mat.>

FU-07620

FU(w/o STI)-90

Fuel Delivery, Return and Evaporation Lines

FUEL INJECTION (FUEL SYSTEMS)

4) In the engine compartment, disconnect the fuel

delivery hoses, fuel return hoses and evaporation

hoses.
CAUTION:

• Be careful not to spill fuel.

• Catch the fuel from hoses using a container

or cloth.

(1) Set the ST to the fuel pipe.

ST 42099AE000 QUICK CONNECTOR RE-

LEASE

(2) Disconnect the quick connector of the fuel

delivery hose and fuel return hose by pushing

the ST in the direction of the arrow.

(3) Remove the clip and disconnect the evapo-

ration hose from the fuel pipe.

5) Remove the canister. <Ref. to EC(w/o STI)-7,

REMOVAL, Canister.>

6) Remove the fuel tank. <Ref. to FU(w/o STI)-68,

REMOVAL, Fuel Tank.>

7) Remove the fuel pipe assembly from vehicle.

8) Disconnect the quick connector, then disconnect

the fuel delivery tube, fuel return tube and jet pump

tube from the fuel tank.

• When using ST

1. Attach ST to the pipe and push ST in the direc-

tion of arrow mark to disconnect the quick connec-

tor.

ST 42099AE000 QUICK CONNECTOR RE-

LEASE

CAUTION:

• Be careful not to spill fuel.

• Catch the fuel from hoses using a contain-

er or cloth.

• To disconnect the connector, hold (C)

shown in the figure and pull in axial direction.

• If the connector and pipe are sticking to

each other, push and pull the connector with

ST pushed, and then pull the connector after

it starts moving freely.

• When disconnecting the connector, do not

bend or twist the tube forcibly. If the tube is

bent, replace with a new part.

NOTE:

Clean the pipe and quick connector, if they are cov-

ered with dust.

2. To prevent from damaging or entering foreign

matter, wrap the pipes and quick connectors with

plastic bag etc.
CAUTION:

When reusing the retainer, do not disconnect

the retainer from the connector.

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

(C) Evaporation hose

FU-05722

ST

(C)

(A)

(B)

(A) Quick connector
(B) Pipe

(C) Connector holding position

FU-05506

ST

(A)

(B)

(C)

(C)

FU-01333