Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Subaru Impreza 2001-2002.2004-2007 Approved Subaru Impreza 2004 WRX STi 02. ENGINE SECTION (STi) 04. MECHANICAL 07. Fuel Pressure

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                                            FUEL PRESSURE
                                                                                                MECHANICAL

7. Fuel Pressure                                          7) After connecting the pressure regulator vacuum
                                                          hose, measure the fuel pressure.
A: INSPECTION                                             Fuel pressure:
CAUTION:                                                    Standard; 230 -- 260 kPa (2.35 -- 2.65
Before removing the fuel pressure gauge, re-                kgf/cm2, 33 -- 38 psi)
lease the fuel pressure.
NOTE:
If out of specification, check or replace the pressure
regulator and pressure regulator vacuum hose.
1) Release the fuel pressure. 
2) Open the fuel flap lid, and then remove the fuel
filler cap.
3) Disconnect the fuel delivery hoses, and then
                                                                                                  ME-00790
connect the fuel pressure gauge.
4) Connect the connector of fuel pump relay.              NOTE:
                                                          The fuel pressure gauge registers 10 to 20 kPa (0.1
                                                          to 0.2 kgf/cm2, 1 to 3 psi) higher than standard val-
                                                          ues during high-altitude operations.




                                         FU-00262

5) Start the engine.
6) Measure the fuel pressure while disconnecting
the pressure regulator vacuum hose from intake
manifold.
Fuel pressure:
  Standard; 284 -- 314 kPa (2.9 -- 3.2 kgf/cm2,
  41 -- 46 psi)




                                         ME-00790




                                                    ME(STi)-27

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