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    1990 Mercury 90hp outboard motor missing at low speeds

    Hello everyone I’m new to this forum I have a 1990 Mercury 2 stroke 90hp. It runs great while half to full speed but when going slow or idle it will miss. I replaced all 3 spark plugs with the best they had. I wondering if it could be a coil issue. And if so I would course replace all 3...
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