1999mustang2000

do our mustangs have a return fuel line? im swapping in a ??crown vics?? pi motor and it does and i cant see to find a return line, what should i do? my cars a 03 gt and the car the new motor came out of was a 04

teej281

we have a returnless fuel system. 96-98 have return systems but not us. Good reason to swap though lol Return style is a better fuel system in my opinion.

sailorflavor

+1 tee is right return style is better but it takes a bit of money to do the swap. I'll sell you my old walboro 255lph fuel pump. I bought it on accident not knowing that I didn't have a return side. 75 bucks shipped.

code3GT

Walbro=crap

1999mustang2000

idrc if its a returnless or not, i just want it to run, how can i use the stock return style fuel line thats on the motor?

medrick

Start over on the passenger side of the motor where the fuel line comes up to the front. From that point all the way to the injectors, reuse your 03 fuel stuff. That should solve your problem correct?

1999mustang2000

i parted out all my old stuff, because my original plan was to put a mark viii motor in, will it work if i cap the return line or weld it shut

1999mustang2000

can it be capped off

medrick

i dunno. i dont know the setup or route that a returnless setup uses.

1999mustang2000

mine was returnless before and this setup is exactly the same except for the fuel rail havent the return fitting, i figure cap it off ill be running the same setup as before