Originally Posted by
Desertlakesflying
All my Kingtechs run great at 5000' from the factory. My smallest is a 140, but a couple of guys have smaller and they don't have issues either.
Diesel and Kingtech oil. On rare occasion I will get a failed start when the temp is below 30 degrees, but it starts right up the second try, and after that the rest of the day.
Well, if all well nothing to do, but if an engine idles at 5000ft it MAY well be possible to reduce idle rpm as altitude is reduced.
I am not familiar with Kingtech, but I do know that the latest JetCat ECUS DO have built in temperature and pressure corrects to adjust fuel flow in the same way as modern fullsize engines do.
That said, if engines with a simpler ECU s are not idling or accelerating well with increased altitude, then an increase in the idle value may be a starting point to better operation.