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black pipe

Discussion in 'Technical Chat' started by Tsenekos, Oct 13, 2009.

  1. Oct 13, 2009 at 9:26 PM
    #1
    Tsenekos

    Tsenekos [OP] Well-Known Member

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    Greg
    Edmonton, CANADA
    Vehicle:
    2005 DC 4WD trd offroad
    Toytec 3" lift w coils,1.5 AAL,5100's all around,diff drop kit, axel shims,N-Fab nerf bars,bestop supertop,fog mod, weathertech mats
    The inside of the exhaust pipe on my '05 DC 4.0L is very black(like a bad carbon build up) and I just got back from a 1400 mile road trip and even the quarter panel above it is kinda getting black. What is causing this? The truck has 58k miles on it, so its still has warrenty should I have the dealer look at it? What kind of diagnose can I do to see where this problem is coming from?? I just changed the oil (5W30 Mobil1 full syn.) new air filter(toyota paper) Pleased help Im alittle worried. I don't really know the maintenancehistory of the truck since I bought it 2 months ago. Thanks guys :)
     
  2. Oct 13, 2009 at 9:29 PM
    #2
    chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine. Moderator

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    FlimFlubberJAM
    Tenoe, AZ
    Vehicle:
    2013 Rubicon Unlimited,
    4.10 gears, sliders, and lots of buttons.
    Dont worry about it. Soot builds up on the pipe from aggressive driving style. Or Semi aggressive. Not an issue. If something was going wrong, in most cases, the CEL would trip.
     
  3. Oct 13, 2009 at 9:31 PM
    #3
    humanoid

    humanoid bite me

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    Sunny SoCal
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    I had a '99 Xtra Cab PreRunner SR5 V6
    Running rich maybe?
     
  4. Oct 13, 2009 at 9:33 PM
    #4
    Tsenekos

    Tsenekos [OP] Well-Known Member

    Joined:
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    Greg
    Edmonton, CANADA
    Vehicle:
    2005 DC 4WD trd offroad
    Toytec 3" lift w coils,1.5 AAL,5100's all around,diff drop kit, axel shims,N-Fab nerf bars,bestop supertop,fog mod, weathertech mats
    that was my first thought as it gets better gas mileage in the city than I was getting on the hwy, city 300 miles per tank hwy 230 to 240 miles per tank @ 70mph avg.:confused:
     
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