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Message: <blockquote data-quote="Shinneryfarmer" data-source="post: 3851959" data-attributes="member: 46291"><p>Agree 100%, work on natural gas industrial engines that run 2100 hrs before a service is required. Had issues with sparkplugs misfiring and being replaced before specified service intervals. By tightening the gap to .011 misfires became nonexistent and plugs would exceed service intervals and by cleaning and regaping to .011 would run another service ($150 per plug x 16). Even on my personal vehicles if I see signs of misfires I tighten the gap to alleviate the issue and usually reap other benefits, mpg or performance.</p></blockquote><p></p>