I have a new zdz super 80 and just started having this problem.I flew the plane saturday and ran great. flew the plane tuesday,and started having this problem, when I fly inverted the engine wants to die, and when i fly left handed knife edge the engine wants to quit. I can flip it back upright and it will stay running. I am gonig to check the tank tonight and see if the clunk is ok. didnt do anything to the plane sat. or tues. just gas and fly.dont know if it might be rich or lean. i have 7 flights on the plane, it is an aero-works 260. the tank is under the wing tube also. any help would be greatly apperciated.


Thanks Rob K.

Rob,

You sound a bit lean, it could also be airflow into the cowl but not likely if you did the same things on saturday and had no problems

Check the plug. It can get debris from the breaking in engine in the gap. Also check any loose wires that could be pulled on during certain manuevers. Move them around with the engine running on the ground etc..of course watch that prop.