Originally Posted by Robbie94gt
Hey guys I'm new to this amd my 94 gt is having fuel issues I believe. It runs smooth amd good but I believe it lacks power. It has 410 gears in it. But I hooked up a fp tester amd it was like 28 at idle amd 34 with the vacuum unhooked. Do y'all think I should start with the regualtor or the pump. And also my spark plugs are really clean and real white in color. So I'm guess it's running lean. If it's running lean is that a power robber?
Your FP should be at 38-39 PSI with the vacuum unhooked.
Running lean will make power up to a point, running a bit rich is more desirable to protect your engine.
Run it to lean and you will burn a piston.
If your regulator is not adjustable, I'd replace that first.