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  1. C

    85 Mercury outboard with Thunderbolt ignition. Won't idle. 1970's

    Need some help please, I checked the compression on the motor and it is as follows: cylinder 1)80, 2)90, 3)100, 4)80. I can start it and it will run but with kick back(like back fire). The interesting thing is that if I disconnect #2 spark plug, the engine will idle great????? I don't...
  2. C

    85 Mercury Stallingwhen put in gear

    I am having problems with my 70's 85HP Mercury outboard with thunderbolt ignition. Have replaced all the wiring that had the insulation crumbling off. I had to replace the trigger because the wiring was beyond repair. I can put muffs on the motor and start it, in my driveway. It is kind of...
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