John:

That is impossible to answer until you know what your F:A ratios are.  In my engine, you can't lean to roughness because my F:A ratios are so even that it never gets rough... it just gets to idle cutoff.  Some engines are so bad that they get rough before they get to peak.  It depends on the specific engine.

Hence, you question has no definitive answer.

Walter



On May 31, 2006, at 5:05 PM, Halle, John wrote:

Well, probably predictably, I have heard, both online and off from the evangelists from both sides of the controversey and exhorted to take various courses or buy various pieces of gear, all of which I had heard before (and may actually do someday.)  My question, however, was really a simple one:  Am I right in assuming that, by leaning until the engine ran rough and then enrichening until it was once again smooth as I was taught, I was ensuring that at least one cylinder was running lean of peak and that the others were, in all probability, also lean of peak or too close to peak on the rich side (as described in John Deakin's article, which I have read several times?)  It's really an academic question that I don't intend to use as the basis for any decision.  Just curious.

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