2003 ranger flex fuel what's the fuel pressure?

[2003 donkey]

Hi what's the fuel pressure on a 2003 flex fuel @ idle? Getting mixed reviews online! 55+-8psi or 65+-8psi? someone go put a pressure gauge on there rail! Lol..... thanks!!! Appreciate any help!

 

[Mac]

I went thru this months ago so I wrote it down. The Flex fuel goes against the chart above and should be 55 psi per Bob Rwenzing.
Dave

 

[2003 donkey]

So flex fuel is 55psi thanks! what is the pressure on a gas rig? 65? I'm thinking I have a gas fuel pressure damper rated for 65psi on a 55psi system. I just picked this truck up and I'm trying to get rid of a ruff idle! Thanks again!