I AM HAVING TROUBLE KEEPING MY 75 CC RUNNING IN THE AIR. I AM RUNNING A 24/10 BAMBULA. I HAVE RUN 1 GALLION OF 32 TO 1 ORGANIC FUEL THREW IT. THEN I SWITCHED TO 50 TO 1 SYNYHETIC. IT RUNS OK WHEN FLYING LEVEL BUT WHEN I START VERTICAL MANUVERS IT QUITS. I HAVE FLOWN IT WITH OUT IT QUITTING BUT IT HAS TO BE VERRY RICH IN LEVEL FLIGHT. ?????
HAS ANYONE ELSE HAD THIS TROUBLE. ALSO IT WON'T START BY HANG I HAVE TO USE A STARTER ???

Hey Tommy,
I don't think one gallon of fuel is near enough to break in a gas engine and make the switch to a 50-1 fuel mix. If your engine quits when you go verticle it sounds to me as if you're getting overheated, lean, or something like that. You may also have a fuel pickup problem. I hope your clunk is a heavy enough one to keep your clunk in fuel. There is no real reason for your engine quitting unless it is getting hot/lean. I would switch back to break in fuel for at least the recomended time from the manufacturer. I bet it's at least 6 to 10 hours run time which is way more than you can expect out of one gallon of gas. Good luck.

I forgot... If your engine won't start by hand with it's electronic ignition, something is wrong, either with your ignition or fuel system. I would suggest you check your carb adjustments closely. If you are very rich your engine will be very hard to start. Have someone in your area assist you with engine adjustments. Once set you shound't have to change anything for quite some time.