Was that the same Bendix Fuel Injection System that was briefly and unsuccessfully used by Chrysler?

Sure, it was innovative, but having to wait 2 - 3 minutes for the vacuum tubes to warm up before you could start your engine was a inconvenience.

I have to give you two thumbs up on that answer, as it is spot on, and appropriate, and clever beyond words!

My question: How hard would it be to get rid of carburetor on old Tecumseh engine, and install some sort of mechanical fuel injector that runs off the output shaft? I would like to attempt making one, but let me add, I only expect this to inject into the air supply as a fine mist, measured so carefully as not to flood the intake by leaving a liquid residue for the engine to ingest. Or we could go electronic really easily with some sort of electronic gizmo that runs in phase with the intake valve.

I think it might be hard to port the thing for direct liquid fuel injection.

According to the Chrysler engineers who worked with/on this system, it was faulty wax-impregnated capacitors, not tubes, that did the system in, because by the time it was being used by Chrysler, Bendix had converted it from vacuum tubes to transistors.