1986 Mercury 50 hp. Won't start

mnfisherrick

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Jun 23, 2019
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This engine has sat for 2 years. I put in new plugs and fresh gas. Seems to have nice blue spark, I have put gas in cylinders and carbs and nothing, no fire at all. Once with a plug out to check spark it did back fire. Other than that it has never fired. Used to run great. Is there maybe a kill switch or something ? But then I would not have spark etc. I'm stumped
 
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