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    87 Mercury- Spark problems

    Trying to determine if the switch box is bad or if the problem may be the trigger coil or stator. There is no spark on lower cylinder and at times not on top cylinder. Have run ohm meter tests using Mercury repair manual as guide on stator, trigger coil, and ignition coils. All results were...
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    87 Mercury 25 hp-Ignition Problems

    Started engine after winter storage and would only run on top cylinder . Bottom cylinder did kick in for just a couple seconds. Checked for spark on lower cylinder and found that there was no spark. Tried to start engine a couple days later-would not start. Checked for spark and found none on...
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