1976 merc 500 50hp coil problem

mjramacher

Recruit
Joined
Jul 8, 2014
Messages
4
I was getting no spark at the #3 cylinder so I replaced the coil pack and the boat ran great for ten minute shut it down and started it up 20 minutes later and it bogged down like before I pulled the plug off and no spark again what am I missing should I replace the plug wire and coil again the new coil has a crack in the bottom now is there something that could be burning these coils out.
 
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