SUBARU LEGACY 1996 Service Repair Manual

8. Fuel Delivery, Return and
Evaporation Lines
A: REMOVAL
1) Release fuel pressure. <Ref. to 2-8 [W1A0].>
2) Remove inner trim, insulator and rear seat.
3) Remove fuel delivery pipes and hoses, fuel return pipes
and hoses, and evaporation pipes and hoses.
B2M0971A
B2M0972A
22
2-8SERVICE PROCEDURE
8. Fuel Delivery, Return and Evaporation Lines

B2M0973A
G2M0296
4) In engine compartment, detach fuel delivery hose,
return hose and evaporation hose.
G2M0370
5) In engine compartment, detach canister hoses from
canister. (Except 2200 cc AWD model)
23
2-8SERVICE PROCEDURE
8. Fuel Delivery, Return and Evaporation Lines

G2M0357
B: INSTALLATION
Installation is in the reverse order of removal.
1) Connect fuel delivery hose to pipe with an overlap of 20
to 25 mm (0.79 to 0.98 in).
Type A: When fitting length is specified.
Type B: When fitting length is not specified.


1Fitting


2Clamp


3Hose

: 1.0—4.0 mm (0.039—0.157 in)
L: 20—25 mm (0.79—0.98 in)
G2M0358
2) Connect evaporation hose to pipe by approx. 15 mm
(0.59 in) from hose end.


1Hose


2Clip


3Pipe
L=15—20 mm (0.59—0.79 in)
CAUTION:
Be sure to inspect hoses and their connections for any
leakage of fuel.
24
2-8SERVICE PROCEDURE
8. Fuel Delivery, Return and Evaporation Lines

G2M0373
9. Roll Over Valve
A: REMOVAL
1) Lift up the vehicle.
2) Remove roll over valve with bracket.
3) Disconnect hoses from roll over valve, and remove it
from bracket.
G2M0374
B: INSPECTION
1) Connect hoses to roll over valve as shown in Figure.
2) While blowing through open end of hose, tilt valve at
least 90° left and right from normal position.
3) Ensure that there is no air flow when hose is tilted
greater than 90°.
G2M0373
C: INSTALLATION
Installation is in the reverse order of removal.
CAUTION:
Do not install top side of valve down.
Before installing bracket on body, securely fit con-
cave part of bracket to hole in body.
G6M0095
10. Fuel Sub Meter Unit (AWD model
only)
A: REMOVAL AND INSTALLATION
1) Disconnect battery ground cable.
G2M0863
2) Remove rear seat.
3) Remove service hole cover.
25
2-8SERVICE PROCEDURE
9. Roll Over Valve - 10. Fuel Sub Meter Unit (Turbo model only)

G2M0864
4) Disconnect connector from fuel sub meter.
5) Disconnect jet pump hose.
G2M0865
6) Remove fuel sub meter unit.
G2M0866
7) Installation is in the reverse order of removal procedure.
Tightening torque:
T: 3—6N⋅m (0.3—0.6 kg-m, 2.2—4.3 ft-lb)
G2M0356
11. Fuel Cut Valve (AWD model only)
A: REMOVAL AND INSTALLATION
1) Remove fuel tank. <Ref. to 2-8 [W3A0].>
G2M0867
2) Disconnect evaporation hose from fuel cut valve.
3) Remove fuel cut valve.
4) Installation is in the reverse order of removal procedure.
Tightening torque:
4.4±1.5 N⋅m (0.45±0.15 kg-m, 3.3±1.1 ft-lb)
26
2-8SERVICE PROCEDURE
10. Fuel Sub Meter Unit (AWD model only) - 11. Fuel Cut Valve (AWD model only)

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

EXHAUST SYSTEM2-9
Page
C COMPONENT PARTS....................................................................................2
1. Exhaust System .......................................................................................2
W SERVICE PROCEDURE...............................................................................4
1. Front Exhaust Pipe and Center Exhaust Pipe ........................................4
2. Rear Exhaust Pipe ...................................................................................7
3. Muffler ......................................................................................................9

1. Exhaust System
1. 2500 cc MODEL
B2M0311A

1Upper front exhaust pipe cover CTR


2Lower front exhaust pipe cover CTR


3Band RH


4Band LH


5Upper front exhaust pipe cover LH


6Lower front exhaust pipe cover LH


7Front exhaust pipe


8Lower front exhaust pipe cover RH


9Upper front exhaust pipe cover RH


10Gasket


11Spring


12Rear exhaust pipe

13Self-locking nut


14Gasket


15Muffler


16Cushion rubber


17Clamp


18Upper center exhaust pipe cover


19Center exhaust pipe


20Clamp B


21Upper rear catalytic converter cover


22Lower rear catalytic converter cover


23Gasket


24Front oxygen sensor

25Rear oxygen sensor


26Front catalytic converter


27Lower front catalytic converter cover


28Upper front catalytic converter cover
Tightening torque: N⋅m (kg-m, ft-lb)
T1: 13±3 (1.3±0.3, 9.4±2.2)
T2: 18±5 (1.8±0.5, 13.0±3.6)
T3: 30±5 (3.1±0.5, 22.4±3.6)
T4: 35±5 (3.6±0.5, 26.0±3.6)
T5: 48±5 (4.9±0.5, 35.4±3.6)
2
2-9COMPONENT PARTS
1. Exhaust System

2. 2200 cc MODEL
B2M0723A

1Upper front exhaust pipe cover CTR


2Lower front exhaust pipe cover CTR


3Band RH


4Band LH


5Upper front exhaust pipe cover LH


6Lower front exhaust pipe cover LH


7Front exhaust pipe


8Lower front exhaust pipe cover RH


9Upper front exhaust pipe cover RH


10Gasket


11Spring


12Rear exhaust pipe


13Self-locking nut

14Gasket


15Muffler


16Cushion rubber


17Clamp


18Upper center exhaust pipe cover


19Center exhaust pipe


20Clamp B


21Upper rear catalytic converter cover


22Lower rear catalytic converter cover


23Gasket


24Front oxygen sensor


25Rear oxygen sensor (California 2200
cc model)

26Rear oxygen sensor (Except Califor-
nia 2200 cc model)


27Front catalytic converter


28Lower front catalytic converter cover


29Upper front catalytic converter cover
Tightening torque: N⋅m (kg-m, ft-lb)
T1: 13±3 (1.3±0.3, 9.4±2.2)
T2: 18±5 (1.8±0.5, 13.0±3.6)
T3: 30±5 (3.1±0.5, 22.4±3.6)
T4: 35±5 (3.6±0.5, 26.0±3.6)
T5: 48±5 (4.9±0.5, 35.4±3.6)
3
2-9COMPONENT PARTS
1. Exhaust System

B2M0724
1. Front Exhaust Pipe and Center
Exhaust Pipe
A: REMOVAL
1) Disconnect front oxygen sensor connector.
B2M0725
2) Disconnect rear oxygen sensor connector. (California
2200 cc model)
B2M0312
3) Lift-up the vehicle.
4) Disconnect rear oxygen sensor connector. (Except Cali-
fornia 2200 cc model)
B2M0055
5) Separate center exhaust pipe from rear exhaust pipe.
B2M0054
6) Remove bolts which hold front exhaust pipe onto cylin-
der heads.
4
2-9SERVICE PROCEDURE
1. Front Exhaust Pipe and Center Exhaust Pipe