Yeah, I might recruit the help of my skinny armed 6yr old to feel around up there lol.I had that trouble and I couldn't get the damn line to not kink so I ended up putting a braided line on it. In my case it was the return line so it was causing really high fuel pressure. I found it by shining a flashlight up between the frame rail and the tank. When I lowered the tank I couldn't tell it was kinking.
This was on the crew cab with the EFI so I have a fuel pressure gauge. Been thinking I should put a gauge on the 73 too for reasons like you're running into and I've had.


