slmnn

I have 95 trans am. I didnt use it about 2 years and now it wont start. Spark plug have spark, fuel in line also and it crank but wont start till i spray fuel in intake manifold. When i switch ignition on fuel pump has sound and fuel line had moved with pressure i think. After that i said maybe it is bad injector. When i disassemble rail and injector and test it on 12v dc. 2 of them had no click sound and no spray. When i had trying to knock down injector on table it was clicking and spraying. 5 injector on 12v have just click sound and sprayed and other of them have bzzz sound like a tattoo machine and it sprayed same like others. I checked injector pulse also, it works.I m thinking about why it wont start, maybe fuel pressure is not enough but there is fuel flow on fuel feed line when i unplugged it.
What do you think?
Sorry for my bad language skill.
Thanks