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1995 12v92

Discussion in 'Engines' started by william Hay, Dec 10, 2021.

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  1. william Hay, Dec 10, 2021
    #1
    william Hay

    william Hay New Member

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    motor that spins but won't turn over and run? Issue?? Fuel? Air? Is a rebuild necessary anywhere in the picture? about 2200 hours
  2. boatpoor, Dec 10, 2021
    #2
    boatpoor

    boatpoor Active Member

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    Do you know the history of the engine? When was it last run? Was it shut down or did it shut itself down? Clean fuel in the tank and valves on?
    Make sure the e-stop hasn't been activated ( spring loaded flap on top of the blower, has to be manually reset if it was activated. What's the temperature there? Turn on the block heater if it's cold.
  3. william Hay, Dec 10, 2021
    #3
    william Hay

    william Hay New Member

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    Shut down after run a couple of months back. Temp here in Houston is 70's. e-stop is fine. fuel seems to be fine. It's not too old.
  4. Capt Ralph, Dec 10, 2021
    #4
    Capt Ralph

    Capt Ralph Senior Member

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    Are these DDEC engines or mechanical injectors?
  5. william Hay, Dec 10, 2021
    #5
    william Hay

    william Hay New Member

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    DDEC. Im going to have DD expert check it out I just want to know what I'm getting into and what to expect. Also, to see if there is something I can do before I call them out.
  6. DOCKMASTER, Dec 10, 2021
    #6
    DOCKMASTER

    DOCKMASTER Senior Member

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    You mean when you push the start button nothing happens?
  7. Capt Ralph, Dec 10, 2021
    #7
    Capt Ralph

    Capt Ralph Senior Member

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    Hopefully you have a second set of batteries for the DDEC computers and controls, all breakers, fuses and wire connects are good and these batteries are up to charge also.
    If not a separate set of batteries, the cranking batteries, while spinning the engines may not give the computers enough voltage to keep running and they crash.
    Still check all breakers, fuses and wire connects.
  8. Capt J, Dec 10, 2021
    #8
    Capt J

    Capt J Senior Member

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    Check power going to DDEC computers and controls. But given the information given, it would be easier to consult a crystal ball. Just not enough info the give advice. Check the emergency shut down dampers (I can't remember if DDEC has them or not, all other DD's have them).
  9. Donzi 54, Dec 11, 2021
    #9
    Donzi 54

    Donzi 54 Member

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    Check the shutdown button and make sure it is not stuck on.
  10. Lunderic, Dec 13, 2021
    #10
    Lunderic

    Lunderic Member

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    Check Shutdowns from fire system if you have one installed. They fail fairly often...