2015. Cascadia exhaust in cab

Discussion in 'Freightliner Forum' started by larryaz, Nov 24, 2014.

  1. larryaz

    larryaz Light Load Member

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    Dec 3, 2006
    Jefferson, Texas
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    Less than 10000 miles and I already smell Exhaust driving and parked.
    Dealer mechanics find no leak but I can definitely smell it. Gives me coughing fits and headaches. Happens with AC / heater blower on and off. Any ideas where its coming from?

    Thanks!
     
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  3. Skate-Board

    Skate-Board Road Train Member

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    No ideas but you need a CO detector. You can't smell carbon monoxide but it may be present also.
     
  4. larryaz

    larryaz Light Load Member

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    Dec 3, 2006
    Jefferson, Texas
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    I have a Co and smoke alarm.
     
  5. Skate-Board

    Skate-Board Road Train Member

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    GOOD!!! I'm amazed how many people don't.
     
    larryaz Thanks this.
  6. rachi

    rachi Road Train Member

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    SoCal
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    The Freight shaker i was driving had a warped exhaust manifold which was coming in the cab and makeing me sick. Check for cracks in the manifold and other parts of the exhaust. Try to tighten all bolts and flanges,etc. A manifold crack could be small and hard to see. Also check around the turbo.
     
    Ditch Doctor Thanks this.
  7. baha

    baha Road Train Member

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    CK. the flex pipe down from turbo. for black around the joints?
     
  8. Moneymike

    Moneymike Light Load Member

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    Apr 17, 2013
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    Also put on recirculate instead of bringing in new air plus the fumes.
     
  9. Cowpie1

    Cowpie1 Road Train Member

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    Kellogg, IA
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    Wondering... stack or weed burner exhaust? Guess that might not make much difference. But with all the exhaust plumbing due to SCR and DPF stuff going on, there are a million places that a leak could occur under the cab. The Manifold or flange off the turbo probably the best place to look first. But as was stated, go to recirc on the cab heater/AC and block the outside air from coming in.
     
  10. Choking

    Choking Bobtail Member

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    Feb 9, 2019
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    I'm having the same issue. What did it end up being? By the way recirculation only partly helps. The truck still brings in some "fresh" air or else you would eventually suffocate.

     
  11. runningman0661

    runningman0661 Road Train Member

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    Clover, South Carolina
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    Exactly where mine was leaking, pretty common on freightliners.
     
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