Well Maybe not so much

I just ran the generator set for an extended period of time as an "Acid" test.  After ~45 minutes of run time the diesel engine shut down. It will re-start but exhibited the same symptoms that I started out with. Start and run but only with pulsing the preheat button. I disconnected the safety shut down plug at the overheat sensor but the engine still stops after release of the start button. A new controller board is on the way for it along with some new isolator mounts for the control panel.  Once again time will tell.