Subaru Impreza 3 / Impreza WRX / Impreza WRX STI. Service 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-
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-
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,
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,
6) Remove the fuel tank. <Ref. to FU(w/o STI)-68,
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
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