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  1. #1
    New Member
    Join Date
    Jul 2011
    Posts
    1
    Tractor
    AD3 152

    Default perkins ad3 152

    HI I HAVE A AD3 152 3 CYLINDER PERKINS
    my problem is that i have fitted it into a boat
    the hours on the engine are 400
    it starts first turn and runs sweet
    temp is good
    But i have a problem with it smoking really black not blue so i gather its fuel
    so got the injectors re done it worked fine for one day then started the same thing again
    so now the only thing i can think of is that the engine is not getting enough air
    so before i go cutting more holes into the cover can any one give me some advice on this again it starts first turn and oil pressure is v-good
    fuel filters have been changed and oil filters
    i do need to add a bit of oil after running the engine for 18hours ie less than a point

  2. #2
    Platinum Member nspec's Avatar
    Join Date
    Dec 2007
    Posts
    610
    Location
    Southern Rhode Island
    Tractor
    Kubota B2630, '53 Farmall Super H, '47 Farmall AI, '44 Farmall A

    Default

    Run it with the cover off or open before you make new holes. That way youll know if its an air problem. My money is that it is. Very common problem on a marine diesel application.

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