AussiePilot

If I read your question correctly, this is a hot restart problem. My DA-50 has always had a bit of a problem when hot restarting .... after I let the plane set for a few minutes. Its like the carb gets "heat soaked" or something like that. My engine acts like this ...... when hot and after setting awhile, it will restart, usually on the first flip and without choking but will not take throttle without dieing. Will again restart easily but the process just repeats. Long ago, I learned that after a hot restart, I just blip the servo controlled choke a time or two when throttling up and it takes off just fine. Its like the carb is vapor locked and choking gets liquid fuel back in the carb then it runs fine. Not a real problem once you understand whats going on. Have never had this sort of problem on any of my side carb engines but that rear carb on the DA gets no cooling when the engine is off. Maybe this isn't your problem but I thought I'd make the suggestion.

Oh yes, if the low speed is set a bit richer, it will restart just fine and take throttle ..... but then it doesn't run right at mid throttle so I'll just continue to hit my choke switch after hot restarts.