Was reading about the problems they having w

Well he says there is not enough voltage coming fr. Comp. I swapped it out yesterday no change not enough voltage to injector to spray will strt if you pour a little feul in throttle body? Then someone else said maybe fuel pump isnt sending enough juice even though you can hear it come on is there antything else to try I read on hear some about chck pin 46 but how do you find which one is that? Also thought it was feul injector relay tried that also?