[Stang_ROTY]

I wasn't aware of that, and until this point I wasn't aware that I was doing it incorrectly. WOuld you mind please detailing the steps that are involved in setting the fuel pressure? Thanks! However, since it's fluctuating once hot (plus I can't start the car when it's hot because the starter drags) I'm going to use some welding cable and run it to the front of my car where the battery used to be. Hopefully, this will stop my fluctuating fuel pressure problem.

BTW- This problem just started. I have 800 miles on the car and until now I never noticed the fuel pressure moving, except when at WOT. (Before this problem) when I punched it, the fuel pressure went up from 43, to 50, down to 38, and back to 43. Plugs were burning great and they looked gray/brown.