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  1. #1

    Cool Overheating new 90 hp marine engine

    i have a john deere marine engine 90 hp new and it keeps over heating and now there is oil in the water can anyone help

  2. #2
    Join Date
    Sep 2011
    Location
    key largo florida
    Posts
    4

    Default Re: Overheating new 90 hp marine engine

    probable popped the head gasket. repair as needed ,clean raw and fresh water sides of cooling system. check that the engine makes rated rpm and not over propped . and away you go

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