Subaru Legacy (2005 year). Manual - part 61

ME(H4SO 2.0)-27

MECHANICAL

Fuel Pressure

7. Fuel Pressure

A: INSPECTION

WARNING:
Before removing the fuel pressure gauge, re-
lease the fuel pressure.

NOTE:
When the fuel pressure is out of standard, check or
replace the pressure regulator and pressure regu-
lator vacuum hose.
1) Release the fuel pressure.
<Ref. to FU(H4SO 2.0)-38, RELEASING OF FUEL
PRESSURE, PROCEDURE, Fuel.>
2) Open the fuel filler flap lid, and remove the fuel
filler cap.
3) Disconnect the fuel delivery hose from fuel
damper, and connect a fuel pressure gauge.

4) Install the fuse of fuel pump to main fuse box.
5) Start the engine.
6) Measure the fuel pressure while disconnecting
pressure regulator vacuum hose from intake mani-
fold.

Fuel pressure:

Standard: 284 — 314 kPa (2.9 — 3.2 kgf/cm

2

, 

41 — 46 psi)

7) After connecting the pressure regulator vacuum
hose, measure the fuel pressure.

Fuel pressure:

Standard: 206 — 235 kPa (2.1 — 2.4 kgf/cm

2

, 

30 — 34 psi)

NOTE:
The fuel pressure gauge registers 10 to 20 kPa (0.1
to 0.2 kgf/cm

2

, 1 to 3 psi) higher than standard dur-

ing high-altitude operations.

ME-00814

ME(H4SO 2.0)-28

MECHANICAL

Valve Clearance

8. Valve Clearance

A: INSPECTION

Inspection and adjustment of valve clearance
should be performed while engine is cold.
1) Set the vehicle on a lift.
2) Lift-up the vehicle.
3) Remove the under cover.
4) Lower the vehicle.
5) Disconnect the ground cable from battery.

6) Remove the timing belt cover (LH).

7) When inspecting #1 and #3 cylinders:

(1) Disconnect the spark plug cords from spark
plugs RH side. <Ref. to IG(H4SO 2.0)-5, RH
SIDE, REMOVAL, Spark Plug.>
(2) Disconnect the PCV hose from rocker cover
(RH).
(3) Remove the bolts, then remove the rocker
cover (RH).

8) When inspecting #2 and #4 cylinders:

(1) Disconnect the spark plug cords from spark
plugs (LH side). <Ref. to IG(H4SO 2.0)-5, LH
SIDE, REMOVAL, Spark Plug.>
(2) Disconnect the PCV hose from rocker cover
(LH).
(3) Remove the bolts, then remove the rocker
cover (LH).

9) Set #1 cylinder piston to top dead center of com-
pression stroke by rotating the crank pulley clock-
wise using socket wrench.

NOTE:
When the arrow mark (A) on cam sprocket (LH)
comes exactly to the top, #1 cylinder piston is
brought to the top dead center of compression
stroke.

10) Measure #1 cylinder valve clearance using
thickness gauge.

CAUTION:
• Insert the thickness gauge (A) in as horizon-
tally as possible with respect to the valve stem
end face.
• Measure the exhaust valve clearances while
lifting-up the vehicle.

Valve clearance (Standard):

Intake

0.20

±

0.04 mm (0.0079

±

0.0016 in)

Exhaust

0.25

±

0.04 mm (0.0098

±

0.0016 in)

11) If necessary, adjust the valve clearance. <Ref.
to ME(H4SO 2.0)-29, ADJUSTMENT, Valve Clear-
ance.>

IN-00203

ME-00199

ME-00200

( A )

ME-00201

( A )

ME(H4SO 2.0)-29

MECHANICAL

Valve Clearance

12) Measure the valve clearance in #3, #2 and #4
cylinder in this order in the same measurement pro-
cedure as #1 cylinder.

NOTE:
• Be sure to set the cylinder pistons to their re-
spective top dead centers on compression stroke
before measuring valve clearances.
• By rotating the crank pulley clockwise every 180

°

from the state that #1 cylinder piston is on the top
dead center of compression stroke, #3, #2 and #4
cylinder pistons come to the top dead center of
compression stroke in this order. 
13) After inspection, install the related parts in the
reverse order of removal.

B: ADJUSTMENT

CAUTION:
Adjustment of valve clearance should be per-
formed while engine is cold.
1) Set #1 cylinder piston to top dead center of com-
pression stroke by rotating the crank pulley clock-
wise using the socket wrench.

NOTE:
When the arrow mark (A) on cam sprocket (LH)
comes exactly to the top, #1 cylinder piston is
brought to the top dead center of compression
stroke.

2) Adjust the #1 cylinder valve clearance.

(1) Loosen the valve rocker nut and screw.
(2) Place a suitable thickness gauge.
(3) While noting the valve clearance, tighten the
valve rocker adjusting screw.
(4) When the specified valve clearance is ob-
tained, tighten the valve rocker nut.

Tightening torque:

9.75 N

⋅

m (1.0 kgf-m, 7.2 ft-lb)

CAUTION:
• Insert the thickness gauge in as horizontally
as possible with respect to the valve stem end
face.
• Adjust the exhaust valve clearances while
lifting-up the vehicle.

Valve clearance:

Intake

0.20

±

0.04 mm (0.0079

±

0.0016 in)

Exhaust

0.25

±

0.04 mm (0.0098

±

0.0016 in)

3) Adjust the valve clearance in #3, #2 and #4 cyl-
inder in this order in the same adjustment proce-
dure as #1 cylinder.

NOTE:
• Be sure to set the cylinder pistons to their re-
spective top dead centers on compression stroke
before adjusting valve clearances.
• By rotating the crank pulley clockwise every 180

°

from the state that #1 cylinder piston is on the top
dead center of compression stroke, #3, #2 and #4
cylinder pistons come to the top dead center of
compression stroke in this order. 
4) Ensure the valve clearances of each cylinder are
within specifications. If necessary, readjust the
valve clearances. 

ME-00200

( A )

ME-00203

ME(H4SO 2.0)-30

MECHANICAL

Engine Assembly

9. Engine Assembly

A: REMOVAL

1) Set the vehicle on a lift.
2) Open the front hood fully and support it with front
food stay.
3) Collect the refrigerant from A/C system. <Ref. to
AC-20, PROCEDURE, Refrigerant Recovery Pro-
cedure.>
4) Release the fuel pressure.
<Ref. to FU(H4SO 2.0)-38, RELEASING OF FUEL
PRESSURE, PROCEDURE, Fuel.> or <Ref. to
FU(H4SO 2.5)-41, RELEASING OF FUEL PRES-
SURE, PROCEDURE, Fuel.>
5) Remove the fuel filler cap.
6) Disconnect the ground cable from battery.

7) Remove the air intake duct, air cleaner case and
air intake chamber.
<Ref. to IN(H4SO 2.0)-8, REMOVAL, Air Intake
Duct.> <Ref. to IN(H4SO 2.0)-5, REMOVAL, Air
Cleaner Case.> <Ref. to IN(H4SO 2.0)-7, REMOV-
AL, Air Intake Chamber.>
8) Remove the under cover.
9) Remove the radiator from vehicle. <Ref. to
CO(H4SO 2.0)-20, REMOVAL, Radiator.>
10) Disconnect the A/C pressure hoses from A/C
compressor.
11) Remove the air intake chamber stay.

12) Disconnect the following connectors and ca-
bles.

(1) Front oxygen (A/F) sensor connector

(2) Rear oxygen sensor connector

(3) Engine ground cable

(4) Engine harness connectors

IN-00203

ME-00816

ME-00859

FU-01116

ME-00206

ME-00817