1994 Pontiac Grand Am dont start, only crank

I have a grand am, the motor cranks but dont start, when a put a gasoline in the on monifold start, the motor have high voltage in the sparks plug, but look like the injectors are not working, I change the gasoline pump, and have gasoline in the injectors at 45 psi.
i change the pcm for other identical car, v¡but it dont start.
why the injectors dont have the pulse?

thanks and regards