97 5.7 CSFI pours fuel

im working on a 97 c1500 it had a bad fuel pump when i try to crank it it takes a few and when it does its got a bad miss in it so this is whats going on but bro-in law changed the computer, coil, pick-up, i put new plugs in i had replaced the intake gasket about 6 mo ago so its new i have took the top off the intake and removed the popets and turned the key on fuel pressure is ok when i plug up the injectors 1 and 8 spray fuel till i cut it off or un plug the pod just had the compter reflashed this after noon any ideas?
banging my head on the wall helpppp