Drew is correct, that's where you start.
There should be a 2-3" squirt comming out and it should hold around 3# pressure after the cranking stops.
If not; check & see if there's ample fuel geting to the pump. If not; the line could be restricted or there's no venting to the tank & a 'non vented' could be the cause.
Also check one of your old pumps to see if there's a strange wear pattern. Sometimes the cam lobe will go flat.
Good luck.
