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acert smoking

Discussion in 'Trucks [ Eighteen Wheelers ]' started by scratch, Dec 6, 2011.

  1. Dec 6, 2011 #1
    scratch

    scratch Bobtail Member

    22
    3
    Nov 23, 2009
    oklahoma city ok
    0
    I have an 06 acert that started smoking a few weeks ago but only smokes when going down a hill or offramp as soon as i git back on the gas it stops smoking. I have to kill it for an hour ar so and it wont smoke for a couple of days or maybe a week and when it smokes it burns a lot of oil thanks
     
    scratch, Dec 6, 2011
    scratch, Dec 6, 2011
    #1
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  3. Dec 6, 2011 #2
    Oscar the KW

    Oscar the KW Going Tarpless

    12,247
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    May 19, 2011
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    When it "smokes" do you have the engine brake on?
     
    Oscar the KW, Dec 6, 2011
    Oscar the KW, Dec 6, 2011
    #2
  4. Dec 7, 2011 #3
    scratch

    scratch Bobtail Member

    22
    3
    Nov 23, 2009
    oklahoma city ok
    0
    it dosent matter it will smoke with it on or off
     
    scratch, Dec 7, 2011
    scratch, Dec 7, 2011
    #3
  5. Dec 7, 2011 #4
    king Q

    king Q Road Train Member

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    Johannesburg sa
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    Check inlet value stem seals or guides.
    It may be sucking oil in to intake when boost pressure drops of and you get a vacuum effect in the intake.
    Under boost conditions the oil is kept out by the pressure in the intake.
    Smoke should be white in color if this is the issue.
     
    king Q, Dec 7, 2011
    king Q, Dec 7, 2011
    #4
  7. Dec 7, 2011 #5
    JohnP3

    JohnP3 Road Train Member

    1,594
    684
    Feb 21, 2010
    Rock Creek B.C. Canada
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    Check the CAC tested and first put the plug in the right side and pressurize the whole system, if you have a valve guide problem, it will have a lot of blow-by. Then you pull the covers and you can see which ones are leaking, the exhaust ones will have a pile of carbon and the intakes a cigarette will tell you which ones not that it really maters if it is excessive the head has to come off to repair them.
    I would also take a bar and listen in the exhaust manifold for broken pieces, with the engine at 800 RPM
     
    JohnP3, Dec 7, 2011
    JohnP3, Dec 7, 2011
    #5
  8. Dec 7, 2011 #6
    little cat 500

    little cat 500 Road Train Member

    2,055
    1,100
    Jan 17, 2010
    Abbottstown PA
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    mine smoked like that when the seal in the back of the turbo was bad new turbo no smoke
     
    little cat 500, Dec 7, 2011
    little cat 500, Dec 7, 2011
    #6
  9. Dec 8, 2011 #7
    scratch

    scratch Bobtail Member

    22
    3
    Nov 23, 2009
    oklahoma city ok
    0
    thanks for all your help
     
    scratch, Dec 8, 2011
    scratch, Dec 8, 2011
    #7
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