dz160 stop in Loud noise
Hello
my engine dz160
Event that happened to me today
I tried to find the peak position ( max rpm ) by adjusting the HS needle valve
i close the needle more and more And suddenly the engine stop in Loud noise and the prop nut Released.
this happened when the HS needle approximately 0.5 turns open from fully closed.
1. Why did it happen and if I caused damage to the engine ? ( Then I could run the engine again )
2. How do you recommend me to find the max rpm ?
Thanks
kobi