I am experiencing 14 psi fuel pressure and engine hesitates under load and will not rev past 3100 rpm. I replaced 2 fuel filters and Oberg was clean as a whistle. I replaced the fuel regulator in the TBI. But suspect it is still bad. I squoze the return line with pliers for an instant while the engine was running and fuel pressure instantly shot to max on the dial. I am certain the fuel pump is good now.

My question, is there different fuel pressures that Crusader or Chevy used on different models?

Any more ideas?

I already pulled the fuel draw tube from the tank, and the tube was clean, the anti siphon valve was moving freely and had a little of what appeared to be pipe dope on it. It was not clogged in any way.

The starboard engine runs up to 4000rpm and has had no issues. It has 20 psi.

Any ideas? Am I barking up the right tree?