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Mike Smith wrote: > JP Roberts wrote: > > > wrote: > > > > Your own words, where you never mentioned "pre-ignition", you very clearly > > stated self-ignition instead: > > And how, exactly, are "pre-ignition" and "self-ignition" different? > They both refer to spontaneous combustion of the fuel/air charge, prior > to the occurrence of the spark. Don't bother- JP is foaming at the mouth to find anything wrong with what I write. Yes, "ping" and "knock" seem to have become synonymous at some point, but I remember as a lad (in the distant past - maybe before Karl Benz named a car after his daughter) that pinging referred to pre-ignition, and that it had a different sound from knocking. But hey, if JP wants to score his little victory, who am I to deny it? If ping now equals knock, or even if it always has, and my automotive mentor was wrong, then I'll chalk it up to something learned. And it's a good day when you learn something new. E.P. |
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