I had the exact same thing happen today with my OS 46 and went dead stick. (landed it great thankfully)


I ran it on the ground and 3 times it died on me after the dead stick landing, it would die after full throttle and dropping down to idle. I took out the OS 6 plug that came with the engine (same one since it was new) and replaced it with a brand new OS8 and bam, problem solved. Ran great, got that nice "pop pop pop" sound and classic OS reliability.


Good luck!