help with fuel injection

ok guys im stuck.my blkazer will crank and then it wont.wtf is the problem.i can spray starting fluid it will crank and run forever and then sometimes it just cranks.im so lost!!!!!!!!!!

sounds like the fuel pump. check the grounds on it. also check the fuel pressure.

james i cant check the pressure.so u think it is the fuel pump.do u know what the pressure is supposed to be?this is pissin me off

i would do a filter 1st to rule that out.

sounds like a fuel pres. problem to me as well like toff says start with the filter first then go from there

i havent put a filter on it yet.i just rebuilt the throttle body and put a new fuel pump in.im thinkin maybe the fuel pump is bad for the get go??????but im just lost

the pressure is right what next