Non FFS fuel system

[mnotx]

I think I remember a descripton of the 2003 non-FFS fuel system being posted here a long time ago, but I can't seem to find it using the search tool. Either that, or my memory is fooling with me.

Does anyone have the description and would like to post it?

[c4c5specialist]

HI there,
Below is the picture of the NON FFS fuel system. The numbers correspond to the picture, to clarify fluid flow.


There are 2 fuel tanks that store the fuel supply.

An electric fuel pump attaches to the fuel sender assembly inside the left fuel tank.

The fuel pump pumps fuel through the fuel feed pipe (6) and an in-line fuel filter (9) to the fuel rail. The rear fuel feed pipe (6) has an integral check valve (4) in order to maintain the fuel system pressure in the feed pipe.

The pump provides the fuel at a pressure greater than what is needed by the fuel injectors. The fuel pressure regulator, part of the fuel filter (9), keeps the fuel available to the injectors at a regulated pressure.

A fuel return pipe (7) returns the unused fuel to the left fuel tank. The fuel pump also feeds the fuel through a tee (5) with an orifice in the fuel feed rear pipe (6) and through the auxiliary fuel feed rear pipe (2) in order to supply the siphon jet pump inside the right fuel tank.

The siphon jet pump transfers the fuel from the right fuel tank to the left fuel tank through the auxiliary fuel return rear pipe (3, 8).


(1) Fuel Feed Pipe
(2) Auxiliary Fuel Feed Rear Pipe (left tank to jet pump)
(3) Auxiliary Fuel Return Rear Pipe (jet pump to left tank)
(4) Fuel Feed Pipe Check Valve
(5) Fuel Feed Pipe Tee with Orifice
(6) Fuel Feed Rear Pipe (to fuel filter/fuel pressure regulator and siphon jet pump)
(7) Fuel Return Rear Pipe
(8) Auxiliary Fuel Return Rear Pipe (jet pump to left tank)
(9) Fuel Filter/Fuel Pressure Regulator