Originally Posted by 300TDT 1987

Did have a Bosch primary filter in there and changed it to a non OEM one and got the same results.

I'm diving into this and ordering all plastic fuel lines and valve seal rings from/to the IP and secondary fuel filter. I will also get a new fuel pressure relief/over flow valve.

I think there may be a leak on the IP return line to the secondary fuel filter, it's awfully dirty and wet in that area of of the IP.

I'm assuming that the Lift pump is fine at this point. Can't find a rebuild kit anywhere so I'll do everything else but that for the time being.

Thanks to everyone, I'll let you know what happens.