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Engine Controls - Service & Adjustment Specifications: Other Subaru Forester SF

Specifications 3 illustrations ~144 words

ENGINE COMPRESSION

ApplicationSpecification
Compression Ratio
All Models9.7:1
Compression Pressure (1) (2)
All Models156-185 psi (11.0-13.0 kg/cm 2 )
(1) Engine cranking at 200-300 RPM with throttle open fully. (2) Maximum variation between cylinders is 28 psi (2.0 kg/cm 2 ).
(1)Engine cranking at 200-300 RPM with throttle open fully.
(2)Maximum variation between cylinders is 28 psi (2.0 kg/cm 2 ).

COMPRESSION SPECIFICATIONS

VALVE CLEARANCE

Note. Inspection and adjustment of valve clearance should be performed while engine is cold.

ApplicationClearance Inch (mm)
All Models
Intake.007-.009 (.18-.23)
Exhaust.009-.011 (.23-.27)

VALVE CLEARANCE

IGNITION COIL

Application(1) Primary(2) Secondary
Forester & Impreza.62-.7617,850-24,150
Legacy
2.2L.66-.8010,880-14,720
2.5L.40-1.0018,000-24,000
(1) Checked between ignition coil primary terminals No. 1 and No. 2, and terminals No. 2 and No. 3. (Scheme 1) (2) Check between ignition coil secondary terminals No. 1 and No. 2, and terminals No. 3 and No. 4. (Scheme 1)
(1)Checked between ignition coil primary terminals No. 1 and No. 2, and terminals No. 2 and No. 3. (Scheme 1)
(2)Check between ignition coil secondary terminals No. 1 and No. 2, and terminals No. 3 and No. 4. (Scheme 1)

IGNITION COIL RESISTANCE - OHMS @ 68°F (20°C)

HIGH TENSION WIRE RESISTANCE

ApplicationOhms
Forester
No. 1 & 36430-15,010
No. 2 & 46670-15,570
Impreza
No. 15950-13,890
No. 2 & 36240-14,560
No. 46670-15,570
Legacy
All Wires5120-12,340

HIGH TENSION WIRE RESISTANCE

SPARK PLUGS

ApplicationChampionNGK
ForesterRC10PYP4APFR5B-11
Impreza
2.2LRC10YC4BKR6E-11
2.5LRC10PYD4APFR5B-11
Legacy
2.2LRC10YC4BKR6E-11
2.5LRC10P4APFR5B-11

SPARK PLUG TYPE

ApplicationGap In. (mm)Torque Ft. Lbs. (N.m)
All Models.039-.043 (1.0-1.1)15 (20)

SPARK PLUG SPECIFICATIONS

FIRING ORDER & TIMING MARKS

Note. Firing order is 1-3-2-4. For coil connections (Scheme 1) For cylinder identification (Scheme 2) For timing marks (Scheme 3)

Scheme 1

Scheme 1: FIRING ORDER & TIMING MARKS
Scheme 1: FIRING ORDER & TIMING MARKS

Scheme 2

Scheme 2
Scheme 2

Scheme 3

Scheme 3
Scheme 3

IGNITION TIMING

ApplicationAuto. Trans.Man. Trans.
Forester15 @ 70015 @ 700
Impreza & Legacy
2.2L20 @ 70014 @ 700
2.5L15 @ 70015 @ 700
(1) To improve stability, timing is controlled while engine is idling. Timing range is plus or minus 8 degrees (all vehicles).
(1)To improve stability, timing is controlled while engine is idling. Timing range is plus or minus 8 degrees (all vehicles).

IGNITION TIMING (Degrees BTDC @ RPM) (1)

FUEL PUMP

ApplicationVac. Line Conn. psi (kg/cm 2 )Vac. Line Disc. psi (kg/cm 2 )
All Models26-30 (1.8-2.1)34-38 (2.4-2.7)

FUEL PRESSURE AT IDLE

INJECTOR RESISTANCE

ApplicationOhms
All Models5-20

INJECTOR RESISTANCE SPECIFICATIONS

IDLE SPEED

ApplicationRPM
Forester
With A/C Off650-750
With A/C On800-900
Impreza
With A/C Off600-800
With A/C On750-850
Legacy
With A/C Off600-800
With A/C On800-900

IDLE SPEED SPECIFICATIONS

FAST IDLE SPEED

Note. Fast idle speed is ECM controlled. Adjustment is not required.

THROTTLE POSITION (TP) SENSOR

Note. See ADJUSTMENTS article in this section for Throttle Position (TP) sensor adjustment procedure.

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