Subaru 2002 Impreza Service Manual page 30

FUEL LINE
Fuel
Injection
(Fuel System)
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.
A A
+
t
(1) Relief valve
(2)
Nozzle
A: Return line
FU-14