engine won't start

What is your question?

i replaced the whole engine from junk yard (45T miles), i tried to crank but won't start continuously, but when i prime gas at intake port, it runs shortly, i checked the fuel gallery and the bleeder it has enough pressure, checked the fuel injector and crank it , no fuel steam comes out, meaning the injectors are not opening while cranking, please help me to trouble shoot this problem and I'll appreciate it so much, thanks