I've tried to ask this question a variety of different ways, with different variables, and each time I get answers about timing, WRD, etc and never get the answer I want. So I will leave out all of the background information and other factors and reduce this to the most simple question I can.
If the (correct bosch) fuel pump in the Mechanical Fuel Injection car is NOT pumping the volume of fuel or pressure of fuel that is within specification, but it IS pumping enough to cause fuel to return to the gas tank, will the injection pump function for purposes of running/idling the car. Assume I'm using starting fluid and the car is firing and that timing and plugs and all that are ok. The only thing I'm asking is if the injection pump needs the proper input pressure and volume for most basic firing of the injectors.
I am not concerned about the circulation needed to keep the pump cool. I am not concerned about the pressure needed to spray the CSV. I am only asking if an under-spec fuel pump will cause the injector pump to not pump gas to the injectors. I only want the car to start. Not drive.
thanks
Scott