Being a single cylinder engine its not self starting, have you turned it
over on steam to try and kick it off. I built a 10V and liked it, it ran
well on air but I never had to opportunity to try it under steam.

wrote:

Got a Stuart vertical engine, model 10v, piped up to a PM Research
boiler. The engine runs great 5lbs of air but will not run on steam.
Good dry steam comes out the exhaust but will not run.
Opened up the steam chest and nothing blocking the ports.
Any ideas, suggestions or tips?

Thanks
Jim