I am re-activating the subject motor after it was garaged for 13 years. VST pump was grimey/gooey but I soaked it and cleaned it for weeks and got it running. I get fuel to the VST but injectors are not firing (injectors were just @ Brucatos and are good). Motor fires right up when pre mix is squirted into EFI manifold. VST pump runs when tested in place per Merc shop manual procedure. When performing voltage check on VST pump by turning on key voltage never goes to zero as it should for 30 sec. When key is turned on voyage oscillates between 13.5 and about 12 volts at about 5-10 cycles per second. Any ideas? I don't have a fuel pressure gauge to check the VST pump pressure ($450 from mercury).