2004 SUBARU FORESTER Service Repair Manual

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Page 1993 of 2870

SUBARU FORESTER 2004 Service Repair Manual FU(H4DOTC 2.5)-63
FUEL INJECTION (FUEL SYSTEM)
Fuel System Trouble in General
31.Fuel System Trouble in General
A: INSPECTION
NOTE:
When the vehicle is left unattended for an extended period of time

FU(H4DOTC 2.5)-63
FUEL INJECTION (FUEL SYSTEM)
Fuel System Trouble in General
31.Fuel System Trouble in General
A: INSPECTION
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 the 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.
(3) 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 the water which may have accumulated in the fuel filter and fuel tank in the man-
ner same as that described under “Affected areas” below.
(4) Affected areas:
When the water condensation is notched in the fuel filter, drain the 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 remov-
ing agent) container before use.
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 the fuel pump.
2) Lowering of fuel pump function. Replace the fuel pump.
3) Clogged dust or water in the fuel filter. Replace the 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 is mixed in the fuel system. Inspect or retighten each connection part.
6) Clogged or bent breather tube or pipe. Clean, correct or replace the 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 the 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 the packing.
3) Cracked fuel separator. Replace the separator.
4) Inoperative 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.

Page 1994 of 2870

SUBARU FORESTER 2004 Service Repair Manual FU(H4DOTC 2.5)-64
FUEL INJECTION (FUEL SYSTEM)
Fuel System Trouble in General

Page 1995 of 2870

SUBARU FORESTER 2004 Service Repair Manual FUJI HEAVY INDUSTRIES LTD. G8080GE4
2004 FORESTER SERVICE MANUAL QUICK REFERENCE INDEX
ENGINE SECTION 3
This service manual has been prepared
to provide SUBARU service personnel
with the necessary inf

Page 1996 of 2870

SUBARU FORESTER 2004 Service Repair Manual EMISSION CONTROL
(AUX. EMISSION CONTROL DEVICE)
EC(H4DOTC 2.5)
Page
1. General Description ....................................................................................2

Page 1997 of 2870

SUBARU FORESTER 2004 Service Repair Manual EC(H4DOTC 2.5)-2
EMISSION CONTROL (AUX. EMISSION CONTROL DEVICE)
General Description
1. General Description
A: SPECIFICATION
Specifications for 2.5 L model are included in
EC(H4DOTC) section. <Ref. to

Page 1998 of 2870

Page 1999 of 2870

SUBARU FORESTER 2004 Service Repair Manual INTAKE (INDUCTION)
IN(H4DOTC 2.5)
Page
1. General Description ....................................................................................2

Page 2000 of 2870

SUBARU FORESTER 2004 Service Repair Manual IN(H4DOTC 2.5)-2
INTAKE (INDUCTION)
General Description
1. General Description
A: SPECIFICATION
Specifications for 2.5 L model are the same as
those for 2.0 L model. <Ref. to IN(H4DOTC)-2,
General Des

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