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Run on has nothing to do with timing directly, only indirectly (see below). It is a function of dieseling (not to be confused with pre-ignition which is timing related). Deiseling is due to hot spots in the combustion chamber which ignite the fuel/air mixture like a spark plug and keep the engine running aftet the ignition is turned off. The source of this excessive combustion chamber heat in order is:
*Too hot a spark plug
*Lean mixture
*Retarded timing
So, richen up your idle circuit, switch to a colder heat range plug, and put your static timing to at least 10 degrees advance.
Ed
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LIFE IS TOO SHORT TO WORRY ABOUT GOOD GAS MILEAGE
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Utinam logica falsa tuam philosophiam totam suffodiant!
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Last edited by CobraEd; 02-06-2002 at 07:56 AM..
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