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Engine Mechanical / Electrical / Re: Baseline Jetting Suggestions
« on: April 13, 2017, 07:20:06 PM »To truly read spark plugs for an air/fuel indication an otoscope is needed. New plugs must be used and after a few hard pulls/passes the engine needs to be shut down ASAP. To really see deep down inside the plug shell at the color ring captured on the porcelain cone, you need an otoscope ( lighted magnifier) to truly see it, the naked eye with natural or florescent light is not enough to truly see the color ring. Color on the plug tip or shell base can only tell one thing….problems, not an air/fuel ratio indication.
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