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  1. M

    1985 Merc 150 hp v6 outboard compression?

    I finally got my boat engine running, but it is running weird. If you push idle all the way forward, it will run, but when you pull back on the arm to shift, it dies. I did a compression test with throttle plate open. All cylinders show 110lbs. My Seloc book says reading doesn't matter as long...
  2. M

    1985 Merc 150 hp v6 outboard no spark

    I am having a problem. I replaced the jets on my engine and the oil line from the injector as well. When I reassembled, there is no spark to any of the plugs. There are two black boxes that control 3 cylinders each.I doubt they both could go like that, so assume there must be a broken wire...
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