Subaru Legacy 2005 Service Manual page 1093

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) Remove the collector cover.
2) Release the fuel
FU(H4DOTC)-39, RELEASING OF FUEL PRES-
SURE, PROCEDURE, Fuel.>
3) Open the fuel filler flap lid, and remove the fuel
filler cap.
4) Disconnect the fuel delivery hose and connect
fuel pressure gauge.
5) Install the fuse of fuel pump to main fuse box.
6) Start the engine.
7) 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
41 — 46 psi)
Fuel Pressure
pressure. <Ref. to
FU-01122
2
,
ME-00802
ME(H4DOTC)-27
8) After connecting the pressure regulator vacuum
hose, measure the fuel pressure.
Fuel pressure:
Standard: 230 — 260 kPa (2.35 — 2.65 kgf/
2
cm , 33 — 38 psi)
NOTE:
The fuel pressure gauge registers 10 to 20 kPa (0.1
2
to 0.2 kgf/cm , 1 to 3 psi) higher than standard dur-
ing high-altitude operations.
MECHANICAL
ME-00802