Automotive Manual PDF

The 2004 to 2006 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. 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 even more important to have a pump capable of delivering more fuel than is needed on the GTO.
(more…)

[Read more →]