To determine if the pump is opening the injectors, just pull 1 injector, turn it up and outside the engine.
Hook the line back up and crank the motor.. and SEE if its firing the injector..
BE CAREFUL!! the fine mist coming out of the injector can/will penetrate the skin and you get blood poisoning.. Just stand back while cranking the engine.. Its dangerous but done regularly.
You can tell also by exhaust smoke while cranking.. if you have some, its getting fuel..
Does it have a "thermostart" in the intake?? Its a cold weather starting aid.. do you know how to activate it??