Lingenfelter L710660504 Lingenfelter Pontiac GTO Fuel Pump 2003-2006 v4.41 - Manual (Page 2)

About the GTO Fuel System
The 2004 to 2006 Pontiac GTO fuel system uses a method that is referred to
as a “return side jet” to fill the fuel pump canister. This means the fuel from the
fuel pressure regulator return is being used to create the high velocity jet that
fills the pump canister (by inducing a high volume/low pressure flow). The pump
itself, like most modern fuel systems, actually pumps the fuel out of the canister
to the engine and the jet refills the canister. This means that if you are using all or
almost all of the fuel that the pump can deliver, there is little or no fuel returned
to the canister by the pressure regulator. Since there is nothing left to drive the
jet, the jet is not able to refill the canister and the pump will eventually run dry.
For this reason it is especially important on the GTO to have a pump capable of
delivering more fuel than is needed by the engine.
Lingenfelter Performance Engineering
1557 Winchester Road
Decatur, IN 46733
260-724-2552
260-724-8761 FAX
www.lingenfelter.com
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