Subaru 2002 Impreza Service Manual page 64

FUEL LINE
Fuel lniection (Fuel Svstem)
3. JETPUMP
0
The jet pump utilizes the velocity of fuel returning from the engine to produce negative pressure
in it.
0
Using the pumping effect produced by the negative pressure, the jet pump transfers fuel from
the sub-compartment to the main compartment of the fuel tank.
0
When the return line nozzle is clogged, the fuel sent back through the return line flows back into
the fuel tank via the relief valve.
r i r i
(1 ) Relief valve
(2) Nozzle
FU-14
A: Return line