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Cummins NTC-400 motor?

Discussion in 'Trucks [ Eighteen Wheelers ]' started by coadman, Jan 18, 2009.

  1. Jan 18, 2009 #1
    coadman

    coadman Light Load Member

    153
    26
    Dec 20, 2008
    Freeport,Kansas
    0
    I am going to look at a 1981 Peterbilt 359, which has a Cummins NTC-400 motor in it. The person that has this, bought it at an auction and has no prior maintenance history on the truck. He told me it misses out a bit, and smokes a bit when first started up, but after it warms up, it runs down the road pretty well. He thought it could need a new injector, but isnt a mechanic, so it's just his guess. Without any more information, can you guys tell me what to possibly look for when I go for a test drive? The truck looks well kept, inside and out, but appearance isnt everything.
    thanks,
    coadman
     
    coadman, Jan 18, 2009
    coadman, Jan 18, 2009
    #1
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  3. Jan 27, 2009 #2
    coalhauler625

    coalhauler625 Light Load Member

    96
    12
    Jan 6, 2009
    somewhere in VA,KY or WV
    0
    the smoke is just the nature of a big cam i'm assuming it is......... look on the block drivers side behind or below fuel pump should say.... big cam....in raised letters (or one look at the cam follewers by someone who knows these engines can tell they are bigger than small cam ) ......check oil before you start it and if it's got a quick drain valve in the oil pan crack it open just to see if you get oil or antifreeze .........changing injectors is no big deal you can buy a whole set for what you may pay for 1 injector in newer engines .....it may just need overhead run ......where i would start....... but if it's beige it'll smoke blue ti'll she warms up
     
    coalhauler625, Jan 27, 2009
    coalhauler625, Jan 27, 2009
    #2
  4. Jan 28, 2009 #3
    vegetto05

    vegetto05 Light Load Member

    95
    23
    Jan 5, 2009
    KC, MO
    0
    STC Valve needs adjusted.
     
    vegetto05, Jan 28, 2009
    vegetto05, Jan 28, 2009
    #3
  5. Jan 28, 2009 #4
    coalhauler625

    coalhauler625 Light Load Member

    96
    12
    Jan 6, 2009
    somewhere in VA,KY or WV
    0
    i doubt it has one probally big cam I or II they didnt come out till BIG CAM IV NT_88 engines at least judging by the 81 model truck but anything is possiable
     
    coalhauler625, Jan 28, 2009
    coalhauler625, Jan 28, 2009
    #4
  7. Jan 29, 2009 #5
    vegetto05

    vegetto05 Light Load Member

    95
    23
    Jan 5, 2009
    KC, MO
    0
    Good call, apparently I read over that :biggrin_25520:
     
    vegetto05, Jan 29, 2009
    vegetto05, Jan 29, 2009
    #5
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