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2012 Peterbilt Cummins ISX oil issue

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by Peterbilt007, Jan 21, 2018.

  1. Jan 21, 2018 #1
    Peterbilt007

    Peterbilt007 Bobtail Member

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    Jan 21, 2018
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    Can someone please tell me if this looks familiar and what it could be.
     

    Attached Files:

    Peterbilt007, Jan 21, 2018
    Peterbilt007, Jan 21, 2018
    #1
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  3. Jan 21, 2018 #2
    Dave_in_AZ

    Dave_in_AZ Road Train Member

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    Is there oil in the coolant?
     
    Dave_in_AZ, Jan 21, 2018
    Dave_in_AZ, Jan 21, 2018
    #2
  4. Jan 21, 2018 #3
    Heavyd

    Heavyd Road Train Member

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    Oil is pretty high up on that intake pipe from your filters. I would say something got spilled on the pipe and it seeped down. When turbos pass oil, its usually on the outlet pipe, and that pipe looks dry to me. Air is usually under a vacuum on that intake pipe, so it is unlikely oil is coming from the inlet of the turbo. I would remove that intake pipe and check the turbo inlet to be safe, but I think that stain came from something else.
     
    Heavyd, Jan 21, 2018
    Heavyd, Jan 21, 2018
    #3
  5. Jan 21, 2018 #4
    Goodysnap

    Goodysnap Road Train Member

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    I agree with Heavy. Clean it off and see if it returns. Nothing to get excited about.
     
    Goodysnap, Jan 21, 2018
    Goodysnap, Jan 21, 2018
    #4
  7. Jan 21, 2018 #5
    Peterbilt007

    Peterbilt007 Bobtail Member

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    Jan 21, 2018
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    The dripping just started today, yesterday that area was dry, and it seems like it’s coming out of the intake pipe of the air filter but the air filter is clean inside.
     
    Peterbilt007, Jan 21, 2018
    Peterbilt007, Jan 21, 2018
    #5
  8. Jan 24, 2018 #6
    jake744

    jake744 Light Load Member

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    Pull the intake pipe off the turbo and make sure oil isn't coming out the cold side of your turbo.
     
    jake744, Jan 24, 2018
    jake744, Jan 24, 2018
    #6
  9. Jan 25, 2018 #7
    Peterbilt007

    Peterbilt007 Bobtail Member

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    Jan 21, 2018
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    I will do that once I get back to the truck, would a forse regen cause something like this?
     
    Peterbilt007, Jan 25, 2018
    Peterbilt007, Jan 25, 2018
    #7
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