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MTU 8V 2000

Discussion in 'Engines' started by Capt Cole, Jan 24, 2017.

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  1. Bamboo, Jan 25, 2017
    #21
    Bamboo

    Bamboo Senior Member

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    If it was brought down at hull speed (1000 rpm or less) then that would be a cause for smoke.
    Have the fuel filters been changed lately? How old is the fuel?
  2. Capt Cole, Jan 25, 2017
    #22
    Capt Cole

    Capt Cole Member

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    Fuel filters are good. She is only carrying about 200 gals of unknown age fuel. No sign of water or gunk. Fresh fuel and a hard run could be the answer. We shall see.

    Thanks again for suggestions.
  3. Capt Ralph, Jan 25, 2017
    #23
    Capt Ralph

    Capt Ralph Senior Member

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    Can we get a color bar next to the smoke at idle (fast idle), under way, and heavy loaded?
    Blue, white, grey, black, steam dissipating quickly, smoke that burns your eyes.
    I have a feeling of blown injector tips but really need more finite details.
    After the loaded run, does the heavy (any) smoke return idling back to the dock?
  4. Capt J, Jan 25, 2017
    #24
    Capt J

    Capt J Senior Member

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    I'm thinking fuel too but I think they would've blown through most of it. If fuel filters are all clean and air filters, I'm leaning towards RCRAPPS thinking of injectors. Did they do an injector cut out test with the laptop to make sure there aren't any injectors that are way off?
  5. Capt Cole, Jan 25, 2017
    #25
    Capt Cole

    Capt Cole Member

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    I am no longer in the Seattle area but have been in touch with the MTU shop. They are continuing to analyze data and will do additional testing. I will post results when I next hear from them. Thank you all for you input and suggestions. The experience on this site is invaluable.
  6. Capt J, Jan 25, 2017
    #26
    Capt J

    Capt J Senior Member

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    Also air and water temps are pretty cold in Seattle area right now, perhaps it's just the colder temps.....I don't know.
  7. Capt Cole, Jan 31, 2017
    #27
    Capt Cole

    Capt Cole Member

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    For the last cold start, we had block heaters on for a couple of days. Amazingly, no smoke. It may be these guys just don't like being started in fairly cold conditions (around 30 degrees F).

    So far, everything on the engines is checking out ok.
  8. Capt J, Jan 31, 2017
    #28
    Capt J

    Capt J Senior Member

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    30F I think ANY diesel is going to smoke a lot at that temperature and it's not recommended to even start a diesel under 60F without block heaters on. A lot of old mechanical diesels won't even start under 50F.....
  9. Capt Cole, Feb 16, 2017
    #29
    Capt Cole

    Capt Cole Member

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    Full mechanical survey completed by authorized MTU shop on both motors. It was simply a matter of using the block heaters. Once we started using them as recommended by the MTU shop, the smoking issue has been resolved. Thank you for all of those who offered there opinions and shared their experience.
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