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  1. C

    Unstoppable 89 mercury 150

    Hey yall, this merc 150 has been swimming twice and is still going strong. Seems to be overcharging the battery as it(the battery) was blowing smoke after a 3 hour cruise. I worked on batteries and voltage regs at Sears in my college years and now run an ac business. Volt meter says 17+...
  2. C

    Voltage Test

    89 Mercury 150 has voltage output at battery of 17+ volts, of course battery was smoking, is there any other failure I should look for before replacing the single regulator on this merc?
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