Lost 3 out of 4 cylinders once at 200ft over a field following a EFATO. Stooged around at very low level hopping from field to field getting ready to land whilst avoiding trees. Got the worst of the vibration cleared and went back to simple rough running. Limped back to the airfield and landed without incident. Did put out a mayday. Managed to appear calm for the students benefit. Engine was a write off and the cause was the exhaust valves sticking open.
Didn't want to fly again that day but did. Was very frightened.
Other than that they were all student induced engine failures (Carb Heat or Mixture Pulling or Tank Selection OFF). Have had several engine stops during aeros/high g.
Roll on direct injection diesel aero engines I say.
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