Subaru Legacy (2005 year). Manual - part 49

 

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Subaru Legacy (2005 year). Manual - part 49

 

 

FU(H4SO 2.0)-55

FUEL INJECTION (FUEL SYSTEM)

Fuel Delivery, Return and Evaporation Lines

CAUTION:
Be sure to inspect the hoses and their connec-
tions for fuel leakage.

3) Connect the evaporation hose to the pipe with
an overlap of 15 to 20 mm (0.59 to 0.79 in).

L = 17.5

±

2.5 mm (0.689

±

0.098 in)

C: INSPECTION

1) Make sure that there are no cracks on the fuel
pipes and fuel hoses.
2) Make sure the fuel pipe and fuel hose connec-
tions are tightened firmly.

(1) Type A

(2) Type B

(3) Pipe

(4) Clamp

(5) Hose

(1) Hose

(2) Clip

(3) Pipe

(3)

(4)

(5)

L

(1)

(2)

FU-00128

FU-00129

(1)

(2)

L/2

L

(3)

FU(H4SO 2.0)-56

FUEL INJECTION (FUEL SYSTEM)

Fuel System Trouble in General

28.Fuel System Trouble in General

A: INSPECTION

NOTE:
• When the vehicle is left unused for an extended period of time, water may accumulate in the fuel tank. Fill
fuel fully to prevent those problem. And also drain the water condensation from fuel filter.
• In snow-covered areas, mountainous areas, skiing areas, etc. where ambient temperatures drop below
0

°C (32°F) throughout the winter season, use water removing agent in the fuel system to prevent freezing

fuel system and accumulating water. Fill the water removing agent each time the fuel is reduced to half to
maintain the advantage.
• When water condensation is noticed in the fuel filter, drain the water from both the fuel filter and fuel tank
or use water removing agent in the fuel tank.
• Before using water removing agent, follow the cautions noted on the bottle.

Trouble and possible cause

Corrective action

1. Insufficient fuel supply to injector

1)

Fuel pump does not operate.

❍ Defective terminal contact

Inspect contact, especially ground, and tighten it 
securely.

❍ Trouble in electromagnetic or electronic circuit parts

Replace the faulty parts.

2)

Decline of fuel pump function

Replace the 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 the fuel pipe or hose.

5)

Air mixed in the fuel system

Inspect or retighten each connection part.

6)

Clogged or bent air 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

Retighten.

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

Retighten.

2)

Defective packing air tightness on the fuel saucer

Correct or replace the packing.

3)

Defective fuel pump modulator or circuit

Replace.

4. Defective fuel meter indicator

1)

Defective operation of fuel level sensor

Replace.

2)

Defective operation of fuel meter

Replace.

5. Noise

1)

Large operation noise or vibration of fuel pump

Replace.

EC(H4SO 2.0)-2

EMISSION CONTROL (AUX. EMISSION CONTROL DEVICES)

General Description

1. General Description

A: CAUTION

• Wear work clothing, including a cap, protective
goggles, and protective shoes during operation.
• Remove contamination including dirt and corro-
sion before removal, installation or disassembly.
• Keep the disassembled parts in order and pro-
tect them from dust and dirt.
• Before removal, installation or disassembly, be
sure to clarify the failure. Avoid unnecessary re-
moval, installation, disassembly and replacement.
• Be careful not to burn yourself, because each
part on the vehicle is hot after running.
• Be sure to tighten fasteners including bolts and
nuts to specified torque.
• Place shop jacks or rigid racks at the specified
points.
• Before disconnecting electrical connectors of
sensors or units, be sure to disconnect the ground
cable from battery.

 

 

 

 

 

 

 

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