1989 20hp Johnson Short Shaft (Help)

BarRig

Recruit
Joined
Jul 18, 2004
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Hi, My boat motor started to miss/backfire at medium throttle. It idles fine and funs great at full throttle. I'm thinking a coil? i will put on a timing light tonight and check. I was wondering if anyone else has had this problem.<br /><br />Cheers, Rob
 
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