Engine/Transmission (1998.5 - 2002) Fass Fuel Pressure ?

[Al Mendes]

Just installed Fass 11 pump only. I read on line guys are getting 14 to 16 psi. We are getting 20psi at idle and at cruise, 17 psi seems to be the lowest it goes with pulling the trailer. I called DPP, they told me that 14-16 is good and my 20 would be OK Unless we got into hot weather and it got hard to start. And then I could change the spring. Really confused, any body have any experiance or thoughts. Confused and Disapointed. Thanks in advance Al Mendes

 

[tractorface]

No reason to be upset

I ran 20-23 for about six months with no ill effects. Lots of guys run that high. I don't feel its needed and lowered my FASS pressure to 13psi. Easy to do by changing the spring behind the supply to engine line. Not even messy to do it. Call DPP and get a weaker spring if that will make you feel better