Subaru Impreza 2003 Service Manual page 192

FUEL DAMPER VALVE
FUEL INJECTION (FUEL SYSTEMS)
27.Fuel Damper Valve
A: REMOVAL
1) Release the fuel pressure. <Ref. to FU(H4SO)-
51, RELEASING OF FUEL PRESSURE, OPERA-
TION, Fuel.>
2) Remove the fuel damper valve from the fuel re-
turn line.
FU-00121
B: INSTALLATION
Install in the reverse order of removal.
FU(H4SO)-64