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Old 02-05-2013, 08:10 PM
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Prollably not really leaner, but possibly hotter. The plug can look about the same either way. I agree to readjust the idle mixture screws and keeping an eye on the plugs. You might want to go to a one step colder plug if they continue to look "lean". Be sure there are no vacuum leaks, too. Hoses, accessories, you know the drill. If you have a vacuum gauge, you can use it to see if the vacuum picks up while spraying carb cleaner or similar around the intake to head and carb to intake gaskets. If there's a leak and it's bad enough you'll hear the engine idle change.
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