fuel filter SUBARU LEGACY 1996 Service User Guide

2. Fuel Line
1. 2200 cc FWD AND 2500 cc MODEL
B2M0046A

1Clamp


2Fuel delivery hose A


3Fuel filter bracket


4Fuel filter holder


5Fuel filter cup


6Fuel filter


7Evaporation hose


8Clip


9Fuel delivery hose B

10Fuel return hose


11Air vent hose


12Canister


13Canister hose A


14Two-way valve


15Canister hose B


16Canister hose C


17Canister bracket


18Fuel pipe ASSY
7
2-8COMPONENT PARTS
2. Fuel Line

1Clamp


2Fuel delivery hose A


3Fuel filter bracket


4Fuel filter holder


5Fuel filter cup


6Fuel filter


7Evaporation hose


8Clip


9Fuel delivery hose B


10Fuel return hose


11Roll over valve


12Roll over valve bracket


13Evaporation hose H


14Evaporation hose I


15Evaporation pipe B


16Canister hose A


17Canister hose B


18Canister holder


19Canister upper bracket


20Cushion rubber


21Canister lower bracket


22Canister


23Fuel pipe ASSY


24Fuel filler valve


25Fuel filler pipe


26Packing

27Ring A


28Ring B


29Fuel filler cap


30Fuel filler pipe protector


31Fuel tank pressure sensor


32Fuel tank pressure sensor hose A


33Fuel tank pressure sensor bracket


34Grommet


35Fuel tank pressure sensor hose B


36Air ventilator hose A


37Air ventilator pipe A


38Air ventilator hose B


39Air ventilator pipe B


40Air ventilator pipe protector


41Vent control solenoid valve


42Vent control solenoid valve hose


43Air filter hose A


44Air filter hose B


45Air filter


46Tapping screw
Tightening torque: N⋅m (kg-m, ft-lb)
T1: 23±7 (2.3±0.7, 17±5.1)
T2: 25±7 (2.5±0.7, 18±5.1)
9
2-8COMPONENT PARTS
2. Fuel Line

B2M0049
11) On AWD model, after removing fuel sub meter unit,
drain fuel from there.
WARNING:
Do not use a motor pump when draining fuel.
2. On-Car Services
A: MEASUREMENT OF FUEL PRESSURE
1) Release fuel pressure.
2) Connect connector to fuel pump.
G2M0347
3) Disconnect fuel delivery hoses from fuel filter, and con-
nect fuel pressure gauge.
G2M0348
4) Start the engine.
5) Measure fuel pressure while disconnecting pressure
regulator vacuum hose from collector chamber.
Fuel pressure:
235 — 265 kPa (2.4 — 2.7 kg/cm
2, 34 — 38 psi)
6) After connecting pressure regulator vacuum hose, mea-
sure fuel pressure.
Fuel pressure:
177 — 206 kPa (1.8 — 2.1 kg/cm
2, 26 — 30 psi)
WARNING:
Before removing fuel pressure gauge, release fuel
pressure.
NOTE:
If out of specification as measured at step 6), check or
replace pressure regulator and pressure regulator vacuum
hose.
12
2-8SERVICE PROCEDURE
1. Precautions - 2. On-Car Services

G2M0358
5) Insert air vent hose approximately 25 to 30 mm (0.98 to
1.18 in) into the lower end of air vent pipe and hold clip.


1Hose


2Clip


3Pipe
L=25—30 mm (0.98—1.18 in)
G2M0361
6) Install fuel filler pipe protector.
7) Install right rear wheel.
5. Fuel Filter
A: REMOVAL
1) Release fuel pressure.
G2M0347
2) Disconnect fuel delivery hoses from fuel filter.
3) Remove filter from holder.
B: INSPECTION
1) Check the inside of fuel filter for dirt and water sedi-
ment.
2) If it is clogged, or if replacement interval has been
reached, replace it.
3) If water is found in it, shake and expel the water from
inlet port.
18
2-8SERVICE PROCEDURE
4. Fuel Filler Pipe - 5. Fuel Filter

C: INSTALLATION
CAUTION:
If fuel hoses are damaged at the connecting portion,
replace it with a new one.
If clamps are badly damaged, replace with new ones.
G2M0347
1) Installation is in the reverse order of removal.
2) Tighten hose clamp screws.
Tightening torque:
1.0
+0.5
0N⋅m (0.1+0.05
0kg-m, 0.7+0.4
0ft-lb)
B2M0048A
6. Fuel Pump
A: REMOVAL
1) Release fuel pressure.
2) Disconnect fuel delivery hose

1and return hose
2.
3) Disconnect jet pump hose

3. (AWD model)
G2M0343
4) Remove nuts which install fuel pump assembly onto
fuel tank.
G2M0344
5) Take off fuel pump from fuel tank.
19
2-8SERVICE PROCEDURE
5. Fuel Filter - 6. Fuel Pump

1. Fuel System
Trouble and possible cause Corrective action
1. Insufficient fuel supply to the injector
1) Fuel pump will not operate.

Defective terminal contact.Inspect connections, especially ground, and tighten
securely.

Trouble in electromagnetic or electronic circuit parts. Replace fuel pump.
2) Lowering of fuel pump function. Replace fuel pump.
3) Clogged dust or water in the fuel filter. Replace fuel filter, clean or replace fuel tank.
4) Clogged or bent fuel pipe or hose. Clean, correct or replace fuel pipe or hose.
5) Air is mixed in the fuel system. Inspect or retighten each connection part.
6) Clogged or bent breather tube or pipe. Clean, correct or replace air breather tube or pipe.
7) Damaged diaphragm of pressure regulator. Replace.
2. Leakage or blow out fuel
1) Loosened joints of the fuel pipe. Retightening.
2) Cracked fuel pipe, hose and fuel tank. Replace.
3) Defective welding part on the fuel tank. Replace.
4) Defective drain packing of the fuel tank. Replace.
5) Clogged or bent air breather tube or air vent tube. Clean, correct or replace air breather tube or air vent tube.
3. Gasoline smell inside of compartment
1)Loose joints at air breather tube, air vent tube and fuel filler
pipe.Retightening.
2) Defective packing air tightness on the fuel saucer. Correct or replace packing.
3) Cracked fuel separator. Replace separator.
4. Defective fuel meter indicator
1) Defective operation of fuel meter unit. Replace.
2) Defective operation of fuel meter. Replace.
5. Noise
1) Large operation noise or vibration of fuel pump. Replace.
NOTE:
When the vehicle is left unattended for an extended period of time, water may accumulate in the fuel
tank.
To prevent water condensation:
1) Top off the fuel tank or drain the fuel completely.
2) Drain water condensation from the fuel filter.
Refilling the fuel tank:
Refill the fuel tank while there is still some fuel left in the tank.
Protecting the fuel system against freezing and water condensation:
1) Cold areas
In snow-covered areas, mountainous areas, skiing areas, etc. where ambient temperatures drop
below 0°C (32°F) throughout the winter season, use an anti-freeze solution in the cooling system.
Refueling will also complement the effect of anti-freeze solution each time the fuel level drops to about
one-half. After the winter season, drain water which may have accumulated in the fuel filter and fuel
tank in the manner same as that described under affected areas as below.
2) Affected areas
When water condensation is notched in the fuel filter, drain water from both the fuel filter and fuel tank
or use a water removing agent (or anti-freeze solution) in the fuel tank.
Observe the instructions, notes, etc., indicated on the label affixed to the anti-freeze solution (water
removing agent) container before use.
27
2-8DIAGNOSTICS
1. Fuel System

1. Fuel System
A: SPECIFICATIONS
Fuel tankCapacity 60
(15.9 US gal, 13.2 Imp gal)
Location Under rear seat
Fuel pumpType Impeller
Discharge pressure 250.1 kPa (2.55 kg/cm
2, 36.3 psi)
Discharge flowAWD: More than 80
(21.1 US gal, 17.6 Imp gal)/h
FWD: More than 65
(17.2 US gal, 14.3 Imp gal)/h
[12 V at 300 kPa (3.06 kg/cm
2, 43.5 psi)]
Fuel filterCartridge type
2
2-8SPECIFICATIONS AND SERVICE DATA
1. Fuel System

1. Fuel Tank
1. 2500 cc AWD MODEL
B2M0630A

1Heat sealed cover


2Fuel tank band


3Protector LH


4Protector RH


5Fuel tank


6Fuel pump gasket


7Fuel pump ASSY


8Fuel cut valve gasket


9Fuel cut valve


10Evaporation hose C


11Evaporation hose A

12Clip


13Joint pipe


14Evaporation hose B


15Evaporation pipe ASSY


16Evaporation hose D


17Clamp


18Jet pump hose A


19Fuel delivery hose A


20Fuel return hose A


21Fuel pipe ASSY


22Jet pump hose B

23Fuel delivery hose B


24Fuel return hose B


25Evaporation hose E


26Fuel sub meter gasket


27Jet pump filter


28Fuel sub meter unit


29Roll over valve
Tightening torque: N⋅m (kg-m, ft-lb)
T1: 4.4±1.5 (0.45±0.15, 3.3±1.1)
T2: 7.4±2.0 (0.75±0.2, 5.4±1.4)
T3: 33±10 (3.4±1.0, 25±7)
3
2-8COMPONENT PARTS
1. Fuel Tank

1Heat sealed cover


2Fuel tank band


3Protector LH


4Protector RH


5Fuel tank


6Pressure control solenoid valve bracket


7Pressure control solenoid valve


8Evaporation hose G


9Evaporation pipe A


10Fuel pump gasket


11Fuel pump ASSY


12Fuel cut valve gasket


13Fuel cut valve


14Evaporation hose C


15Evaporation hose A


16Clip


17Joint pipe


18Evaporation hose B


19Evaporation pipe ASSY

20Evaporation hose D


21Evaporation hose E


22Clamp


23Jet pump hose A


24Fuel delivery hose A


25Fuel return hose A


26Fuel pipe ASSY


27Jet pump hose B


28Fuel delivery hose B


29Fuel return hose B


30Evaporation hose F


31Fuel sub meter gasket


32Jet pump filter


33Fuel sub meter unit
Tightening torque: N⋅m (kg-m, ft-lb)
T1: 4.4±1.5 (0.45±0.15, 3.3±1.1)
T2: 7.4±2.0 (0.75±0.2, 5.4±1.4)
T3: 33±10 (3.4±1.0, 25±7)
6
2-8COMPONENT PARTS
1. Fuel Tank

2. Fuel Line
1. 2200 cc FWD AND 2500 cc MODEL
B2M0046A

1Clamp


2Fuel delivery hose A


3Fuel filter bracket


4Fuel filter holder


5Fuel filter cup


6Fuel filter


7Evaporation hose


8Clip


9Fuel delivery hose B

10Fuel return hose


11Air vent hose


12Canister


13Canister hose A


14Two-way valve


15Canister hose B


16Canister hose C


17Canister bracket


18Fuel pipe ASSY
7
2-8COMPONENT PARTS
2. Fuel Line