[2000bravada]

Bought the gauge, test results yield no clues.

With ignition at run the pressure goes to 60-62, and stays for 3 min+. After starting the pressure drops to ~54 while idling. While driving, the pressure jumps to 60 while coasting, and drops to 51-52 during acceleration (up to 4500+ rpm).

According to my manual, my CSEFI system runs at 55-61, less 3-10 while running at idle.

So, any suggestions? Any chance this is the fuel pressure regulator failing (though, as stated above, it'd only fail after a few hours of driving and hundreds of miles away from home on long road trips - never near home no matter how much driving I do)? Thanks.