1981 Evinrude 140 sport won’t backfire problem

by Brooks walsh
(USA Knoxville TN)

I have a 1981 Evinrude v4 140 sport that will not run but will only backfire. I don’t know enough about outboards to figure out the problem. I did figure out that 3 out of the 4 cylinders were getting spark. Has good compression and gets fuel. Much help needed. Thanks

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