Originally Posted by
basimpsn
I think Kingtech engines are sensitive to certain brands of oil. I ran out of turbine fuel and use a friend of mine's fuel but after the flight my engine wouldn't cool down and turning the compressor by hand feels like gummy, quickly drain the last 50 ounce out of my tank and ran it thru which fix the problem. Not sure what brand oil my friend was using.
P.S Because of the gum-up bearing during start-up will cause excessive flames but will start eventually.
Yes I can see this, but in my experience anything gummy in the bearings gets washed away pretty quick. The OP says he was getting it on every start up.
What I HAVE seen is distortions in the rear bearing housings, EGV, etc or of course some schmutz that gets on the ring and starts to transfer metal from the turbine blade to the EGV ring, that gets worse and worse. These caused flames on start up.