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Recent content by James_69r

  1. J

    86 mercury 75hp intermittent spark

    Hi I recently got a boat with a 75hp mercury outboard on the back. Was told it has a slight miss and needed to sort it out. I have done compression test and all were 142-151psi. have done a spark test and here is what I found. Only cylinder number 1 was sparking. I tested each plug and lead and...
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