fuel pressure regulator problem.... wanted some opinions.

[tak209]

so i recently did a gze swap in my ae86 and i am not getting fuel to the injectors. i pulled the line off the FPR (fuel pressure regulator) and i have gas and pressure. but i dont have any gas coming out of the FPR to the rail when i hook the line back up. i rebuilt the engine but i did not replace the cold start injector or the FPR. my question is this, with the FPR off the fuel rail, and there is not gas coming out but there is pressure and gas going to it, the FPR must be stuck open correct? if it were stuck closed fuel would be coming from the vacuum of the FPR. or could the new 255lph walbro be putting too much pressure to the regulator????

sigh. i miss my corolla lol.

thanks for the thoughts and opinions in advance.

[HASport AE86]

So you have:
-Pressure up to the rail
-With the engine cranking and the return hose to the tank off, there is nothing coming out of the pressure regulator return fitting that goes back to the tank

I would check for a restriction where the banjo fitting is on the fuel IN line. Maybe you don't have the banjo lined up properly? If you take the regulator off completely and try to crank it, does fuel come out?

[HASport AE86]

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[tak209]

if i take the line off the fuel pressure regulator i get fuel while cranking. but no fuel if i hook up the fuel pressure regulator to the rail. i just got my new fuel pressure regulator in yesterday and still no fuel past the rail. =(

[tak209]

problem solved i crossed the fuel lines like a idiot. thanks man.