Shocker444
Fummins Time!
I have been having issues diagnosing high fuel pressure in my 150 with a 12v Cummins and P7100. It had a 55 p.s.I. spring in it, but I cut it down, just to find out my return line was too small and posing a restriction. Do you offer a 40-45 psi spring or can I get one locally?