by Phil Kennedy, SprintAero.
As published in Sport Flying Magazine, Spring 2015
A LITTLE TOYOTA that hasn’t had it’s plugs checked in years, because the mechanics thought it had Iridiums that need changing only every 100,000 km, developed a misfire the other day. Upon investigation I found that this 160,000 km old engine has had its spark plugs changed only once in its life and the very
worn spark plugs have gaps that are enormous and have been for at least a year, by my reckoning.
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