HELP WITH VORTEC V8

Ok here's my problem.... I thought the fuel pump went out so i changed it well thats not the problem, All relays are clicking, I'm getting fuel to the intake manifold through the hardlines, I know both injectors wont go out at the same time. I'm stumped anyone think they might know what the problem could be? Please help I need my burb running again.

thanks

if you have a vortec v8 you have 8 injectors, SCFI on the 5.7 98older, and MPFI on the 99 up 4.8/5.3's. we need more specs, model, year, exact problems..

make sure you put the right pump on. .im not ryin 2 b a smartass by sayin that wat i mean is it could b a flex fuel truck an on a flex fuel it pumps reverse its a completly different pump an filter

its a 96 suburbun its getting the right presure in the lines. and there is 2 injectors that spiderleg out to each cyclender