Legacy Outback Wagon F4-2.5L SOHC (2000)
Jet Pump: Description and Operation
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The jet pump utilizes the velocity of fuel returning from the engine to produce negative pressure inside the jet pump.
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This negative pressure allows fuel to be sucked up.
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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.