Ran a compression check. All cylinders are 180 - 190 pounds. What should the compression be? Also noticed that the plugs are black as coal. They have a grand total 251 miles on them. That threw up a major red flag. Wouldn't that have to be the fuel pressure regulator? That would explain the excessive and I mean EXCESSIVE fuel consumption, the stumble on acceleration, and the rough idle. I don't have the stuff to check fuel pressure, but I'm gonna venture a guess and say that's my problem. What do y'all think? And , how the crap do you get to this thing? You can't even see it, and can just touch it over the back of the motor.