Well im back....i jus installed a new fuel pump and my 94 z28 is running good...the only problem i have is that it still has a slight hesitation on acceleration...right around the 2000 rpm range it seems to fall on its face then clears up when u give it more throttle...i havent figured out wat it is yet and it has no other performance problems...it idles fine and drives fine jus has a hesitation

 

Check the rubber inlet elbow for a tear, or the bottom being off the throttle body.