High fuel pressure

[GreenYJ]

In preparation for the stroker I'm building for my '94 YJ (and to perhaps get a couple of horsepower back to a dying engine) I have installed a map adjuster and adjustable fpr. To my surprise the pressure crept up to 60 psi and wouldn't move any lower. My fpr was used on a different efi system recently so I felt that wasn't the problem. I reinstalled stock fpr and still at 60 psi. Next I removed fpr and installed aluminum blank I made to replace fpr, so NO regulator, and STILL 60 psi. I ran out of time to diagnose further, but I think it's safe to say I have a restriction in the return line somewhere. That would probably explain the rich running smell...Haha.

[GreenYJ]

Here's the blank next to the original fpr.

20170320_175352.jpg

And the new adjustable fpr.

20170320_175601.jpg

[Shade_Tree]

Hey, just out of curiosity...did that end up being a constriction in your return line causing this?

thanks,

[GreenYJ]

I haven't dropped the tank yet, but I suspect a hose got pinched. Skid plate is starting to rust so I'll probably do skid upgrade, fuel pump upgrade, and fix restriction.