2004 SUBARU FORESTER engine

LU(H4SO)-24
LUBRICATION
Engine Lubrication System Trouble in General
9. Engine Lubrication System Trouble in General
A: INSPECTION
Before performing diagnostics, make sure that the engine oil level is correct and no oil leakage exists.
Trouble Possible cause Corrective action
1. Warning light remains
on.1) Oil pressure switch
failureCracked diaphragm or oil leakage within switch Replace.
Broken spring or seized contacts Replace.
2) Low oil pressureClogged oil filter Replace.
Malfunction of oil by-pass valve of oil filter Clean or replace.
Malfunction of oil relief valve of oil pump Clean or replace.
Clogged oil passage Clean.
Excessive tip clearance and side clearance of oil
pump rotor and gearReplace.
Clogged oil strainer or broken pipe Clean or replace.
3) No oil pressureInsufficient engine oil Replenish.
Broken pipe of oil strainer Replace.
Stuck oil pump rotor Replace.
2. Warning light does
not go on.1) Malfunction of combination meter Replace.
2) Poor contact of switch contact points Replace.
3) Disconnection of wiring Repair.
3. Warning light flickers
momentarily.1) Poor contact at terminals Repair.
2) Defective wiring harness Repair.
3) Low oil pressureCheck for the same
possible causes as
listed in 1. — 2).

FUJI HEAVY INDUSTRIES LTD. G8080GE2
2004 FORESTER SERVICE MANUAL QUICK REFERENCE INDEX
ENGINE SECTION 1
This service manual has been prepared
to provide SUBARU service personnel
with the necessary information and data
for the correct maintenance and repair
of SUBARU vehicles.
This manual includes the procedures
for maintenance, disassembling, reas-
sembling, inspection and adjustment of
components and diagnostics for guid-
ance of experienced mechanics.
Please peruse and utilize this manual
fully to ensure complete repair work for
satisfying our customers by keeping
their vehicle in optimum condition.
When replacement of parts during
repair work is needed, be sure to use
SUBARU genuine parts.
All information, illustration and specifi-
cations contained in this manual are
based on the latest product information
available at the time of publication
approval.FUEL INJECTION (FUEL SYSTEM) FU(H4SO)
EMISSION CONTROL
(AUX. EMISSION CONTROL DEVICE)EC(H4SO)
INTAKE (INDUCTION) IN(H4SO)
MECHANICAL ME(H4SO)
EXHAUST EX(H4SO)
COOLING CO(H4SO)
LUBRICATION LU(H4SO)
SPEED CONTROL SYSTEM SP(H4SO)
IGNITION IG(H4SO)
STARTING/CHARGING SYSTEM SC(H4SO)
ENGINE (DIAGNOSTIC) EN(H4SO)

SP(H4SO)-4
SPEED CONTROL SYSTEM
Accelerator Pedal
2. Accelerator Pedal
A: REMOVAL
1) Disconnect the ground cable from battery.
2) Remove the lock nut from accelerator cable
bracket.
3) Separate the accelerator cable from bracket.
4) Remove the accelerator cable end from throttle
cam.
NOTE:
Be careful not to kink the accelerator cable.
 Non-turbo model
 Turbo model
5) Remove the clip inside engine compartment.
 LHD Non-turbo model RHD Non-turbo model
 LHD Turbo model
 RHD Turbo model
6) Remove the instrument panel lower cover from
instrument panel, and connector.
7) Disconnect the connector from kick-down
switch. (AT model)
(A) Lock nut
(B) Accelerator cable bracket
(C) Accelerator cable
(D) Throttle cam
(B)(D)
(C)
(A)
SP-00003
(B) (D)
(C)
(A)SP-00004
SP-00017
(A)
(B)(C) (D)
(E)
(E)
(E)
(A) Toe board
(B) Accelerator cable
(C) To accelerator pedal
(D) Brake booster
(E) Clip
(A) (B)(C)
(E)(E)(E)
(E)
(D)
SP-00005
(A) (D)
(E)
(E) (E)(C)
(B)
(E)
SP-00023
(A)
(D) (E)
(E)(B)(C)
SP-00006

SP(H4SO)-9
SPEED CONTROL SYSTEM
Accelerator Control Cable
3. Accelerator Control Cable
A: REMOVAL
1) Remove the accelerator pedal. SP(H4SO)-4, REMOVAL, Accelerator Pedal.>
2) Separate the accelerator cable and accelerator
pedal.
B: INSTALLATION
1) Install in the reverse order of removal.
NOTE:
 If the cable clamp is damaged, replace it with a
new one.
 Never fail to cover the outer cable end with boot.
 Be careful not to kink the accelerator cable.
CAUTION:
Do not apply grease to except specified part.
2) Apply grease to engine side accelerator cable
end.
Grease:
Slicolube G-30M (Part No. 004404002)
3) Adjustment after pedal installation. SP(H4SO)-7, ADJUSTMENT, Accelerator Pedal.>
C: INSPECTION
1) Make sure the inner cable is not twisted or worn.
2) Make sure the outer cable is not cracked.
(A) Accelerator cable end
(B) Throttle cam
SP-00042
( A )
( B )

FUJI HEAVY INDUSTRIES LTD. G8080GE2
2004 FORESTER SERVICE MANUAL QUICK REFERENCE INDEX
ENGINE SECTION 1
This service manual has been prepared
to provide SUBARU service personnel
with the necessary information and data
for the correct maintenance and repair
of SUBARU vehicles.
This manual includes the procedures
for maintenance, disassembling, reas-
sembling, inspection and adjustment of
components and diagnostics for guid-
ance of experienced mechanics.
Please peruse and utilize this manual
fully to ensure complete repair work for
satisfying our customers by keeping
their vehicle in optimum condition.
When replacement of parts during
repair work is needed, be sure to use
SUBARU genuine parts.
All information, illustration and specifi-
cations contained in this manual are
based on the latest product information
available at the time of publication
approval.FUEL INJECTION (FUEL SYSTEM) FU(H4SO)
EMISSION CONTROL
(AUX. EMISSION CONTROL DEVICE)EC(H4SO)
INTAKE (INDUCTION) IN(H4SO)
MECHANICAL ME(H4SO)
EXHAUST EX(H4SO)
COOLING CO(H4SO)
LUBRICATION LU(H4SO)
SPEED CONTROL SYSTEM SP(H4SO)
IGNITION IG(H4SO)
STARTING/CHARGING SYSTEM SC(H4SO)
ENGINE (DIAGNOSTIC) EN(H4SO)

IG(H4SO)-5
IGNITION
Spark Plug
2. Spark Plug
A: REMOVAL
CAUTION:
All spark plugs installed on an engine, must be
of the same heat range.
1. RH SIDE
1) Disconnect the ground cable from battery.
2) Remove the air cleaner case. 8, REMOVAL, Resonator Chamber.>
3) Remove the spark plug cords by pulling boot, not
the cord itself.
4) Remove the spark plugs with spark plug sock-
ets.
2. LH SIDE
1) Disconnect the ground cable from battery.
2) Disconnect the washer motor connector.
3) Disconnect the rear window glass washer hose
from washer motor, then plug connection with a
suitable cap.
4) Remove the two bolts which hold washer tank,
then take the tank away from the working area.
5) Remove the spark plugs cord by pulling boot, not
the cord itself.
Spark plug
CHAMPION: RC10YC4
NGK: BKR5E-11 (Alternate)
FU-00009
IG-00017
IG-00018
FU-00009
IG-00019
IG-00020
IG-00021

IG(H4SO)-7
IGNITION
Spark Plug
3) Oil fouled:
Wet black deposits show excessive oil entrance
into combustion chamber through worn rings and
pistons or excessive clearance between valve
guides and stems. If the same condition remains
after repair, use a hotter plug.
4) Overheating:
White or light gray insulator with black or gray
brown spots and bluish burnt electrodes indicates
engine overheating. Moreover, the appearance re-
sults from incorrect ignition timing, loose spark
plugs, wrong selection of fuel, hotter range plug,
etc. It is advisable to replace with plugs having
colder heat range.
D: CLEANING
Clean the spark plugs in a sand blast type cleaner.
Avoid excessive blasting. Clean and remove the
carbon or oxide deposits, but do not wear away ce-
ramic insulator.
If deposits are too stubborn, replace the spark
plugs.
E: ADJUSTMENT
Correct it if the spark plug gap is measured with a
gap gauge, and it is necessary.
Spark plug gap: L
1.0 — 1.1 mm (0.039 — 0.043 in)
NOTE:
Replace with a new spark plug if this area (A) is
worn to “ball” shape.
IG-00026
IG-00027
IG-00028
L
(A)

FUJI HEAVY INDUSTRIES LTD. G8080GE2
2004 FORESTER SERVICE MANUAL QUICK REFERENCE INDEX
ENGINE SECTION 1
This service manual has been prepared
to provide SUBARU service personnel
with the necessary information and data
for the correct maintenance and repair
of SUBARU vehicles.
This manual includes the procedures
for maintenance, disassembling, reas-
sembling, inspection and adjustment of
components and diagnostics for guid-
ance of experienced mechanics.
Please peruse and utilize this manual
fully to ensure complete repair work for
satisfying our customers by keeping
their vehicle in optimum condition.
When replacement of parts during
repair work is needed, be sure to use
SUBARU genuine parts.
All information, illustration and specifi-
cations contained in this manual are
based on the latest product information
available at the time of publication
approval.FUEL INJECTION (FUEL SYSTEM) FU(H4SO)
EMISSION CONTROL
(AUX. EMISSION CONTROL DEVICE)EC(H4SO)
INTAKE (INDUCTION) IN(H4SO)
MECHANICAL ME(H4SO)
EXHAUST EX(H4SO)
COOLING CO(H4SO)
LUBRICATION LU(H4SO)
SPEED CONTROL SYSTEM SP(H4SO)
IGNITION IG(H4SO)
STARTING/CHARGING SYSTEM SC(H4SO)
ENGINE (DIAGNOSTIC) EN(H4SO)