Checked fuel pressure yesterday and it looks good. Checked 35 psi and held the pressure good with engine shut off. Removed gauge after about 15 minutes or so. Manual states that fuel pressure should be between 30 to 40 psi and hold this pressure with engine off for at least 5 minutes. It's looking like I might have to drop the tank to find this problem. I'm guessing that it is loosing fuel pressure after setting for 8 hours or so and some how getting air in the line. Any Idea's or suggestions out there?