Pony 5.0

I just installed an Accufab fuel pressure regulator and it seems that the brass nipple fitting for the vacuum line is too small in diameter to hold the stock Ford regulator vacuum line. The line fits the stock regulator as well as the Kirban I just replaced with the Accufab, so I know the line is not the reason. If you are running a FREG, please tell me if you have had the same problem and how you solved it. I contacted Accufab and was told that they have been using the same brass nipples for 10 years with no issues.

r1pilot

I just installed mine as well and noticed it does fit kind of loose. I don't think it is causing a leak though.

AdderMk2

why did you replace the kirban

Pony 5.0

After changing to a 255lph pump, the regulator lost the ability to regulate the fuel flow. It stuck at 44psi and wouldn't come down. In all fairness, it was a 4 year old regulator and worked flawlessly before the pump change. I am 99% sure it was the pump because I checked the return line, then had my mechanic check it out as well.