Just installed fass fuel pump last week. have fuel dripping from old supply line does anyone know if this line needs to be plugged at old line pump. don't know if its just left over fuel from filter housing or theres fuel getting back into the supply from injector pump. does anyone have a diagram of the fuel system on my 01 3500 dually, fuel pump is under the hood not in the tank. Thanx newbie here

 

You can take the supply line out, I did. Keep the return on there though...otherwise you will spill fuel all over and possibly short out your fuel sender...

 

Nothing to worry about.Its just residual fuel from the old lines.You can remove the old LP and filter housing assembly if you want to.

 

thanx for the input