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Water in Oil

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  • Water in Oil

    I have a 06 4 stroke 115 TJR jet, I had new short block and cylinder head as well as a new oil pump and water pump replaced all OEM parts. I broke the engine in according to the owners manual and ran the boat for about a total of 2.5 hrs. They were all short runs of about 7 min running it at about 4400 rpms after the initial break in, the rest of the time was at idle or max 3200 rpms flushing out the motor at the local lake. I went to put the boat away for two weeks while I was out of town and decided to change the oil as a precautionary measure. When I dropped the plug maybe a 1/4 cup of water came out. I did smell it and it seemed like it was water to me, I did not smell fuel. I checked the thermostat and there was no debris stuck in there it was in the closed postion. I live in AK and the weather has been pretty cold and the water I am running in is cold probably 40 degrees.Is it possible that the water is condensation, 1/4 cup after 2.5 hrs? I find that hard to believe but have read about 115's having a problem with this. I did not check the plugs I now wish I had before I left town. Any one have similiar experinces? Thanks in advance for any responses

  • #2
    I would suspect a bad gasket or gasket slipped out of place when assembling head or engine back on mid section.
    Regards
    Boats.net
    Yamaha Outboard Parts

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