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    Mercruiser 3.0 Pinging help

    Let me start by saying this forum has helped with answering so many questions by simply taking the time to read. You guys are awesome!! I have read everything on pinging and I am lost. This started a few weeks back, did the cardinal mistake. changed octane level of fuel and it started pinging...
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    2003 mercruiser 3.0 water ontop of cylinders

    Newbie here, been reading a lot of posts finding several similar but none exact so thought I would give it a shot. Getting water on top of what appears to be all 4 cylinders, mostly #4. Going back a little, noticed water in the oil after weekend fishing trip and then noticed water in #4...
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