Fuel Problems?

Question

1994 Pontiac Grand Prix , Could someone draw a rough Diagram
of the fuel system from the fuel pump to the Ejectors .( especially need diagram of the Fuel Pressure regulator). What is the normal fuel pressure created by the pump ?

Thanks , shakespeare

Answer 1

You really don't need a diagram, it's pretty simple.
1.) 2 lines come out of fuel tank, 1 high pressure line. 1 return line.

2.) Pressue line runs to fuel filter located near fuel tank.

3.) From fuel filter, pressure line runs to fuel rail opposite end of pressure regulator.

4.) Left over fuel returns to tank by way of the return line located on the pressure regulator side.

-Fuel pressure should run around 40 to 47 PSI (key on / engine off)
-the only way to check fuel pressure is to have a in-line fuel pressure gadge, which you have to connect up under the vehicle.
(Stupid design, i know!) Hope this helps!