July 15, 200917 yr what is pinking? A misunderstanding of the word "pinging", which is pre-detonation.
July 15, 200917 yr Try using the highest Octane Unleaeded you can get Shell is a good one or 50/50 with Avgas, as said above pinking is pre ignition/detonating of the fuel via heat or compression or both Edited July 15, 200917 yr by The Addict
July 15, 200917 yr Can it not be tuned out at the carb though rather than altering the fuel octane? Is it related to altitude too? there must be a good reason for it happening. Andy.
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