Thank you all!
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Car came in with a p0301 code- mis-fire in cyl #1;
and plug is burnt...-- reset codes,
replaced plug, cleaned intakes with seafoam,
and treated engine and fuel with Seafoam also;
running now, with no codes, and idles smoothly;
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now it is ready for our master service job - front to back,
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You guys are awesum!