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Exhaust Leaking?

Discussion in 'Trucks [ Eighteen Wheelers ]' started by CosaLima, Aug 20, 2023.

  1. Aug 20, 2023 #1
    CosaLima

    CosaLima Bobtail Member

    7
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    May 20, 2023
    0
    Hello. Any of you had a problem with exhaust leak on the picture? Cummins X15 engine. It mainly leaks when I am slowing down. I do some work by myself on the truck but this is something I have never dealt with. Truck is working fine no check engine light on but I would love to fix this leak. It makes hissing sound when slowing down.
    Looks like it might be just a clamp but I tried tightening it and it didn’t work. Can this be pulled out easily to check what the problem is? Thnx in advance.
     

    Attached Files:

    CosaLima, Aug 20, 2023
    CosaLima, Aug 20, 2023
    #1
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  3. Aug 20, 2023 #2
    AModelCat

    AModelCat Road Train Member

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    Canuckistan
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    No idea what I'm looking at but I would say it looks like a slip joint seal and probably has a piston ring style seal in there. If it does, you'll have to pull the joint apart to replace the ring(s) and in all likelihood will probably just keep leaking.
     
    AModelCat, Aug 20, 2023
    AModelCat, Aug 20, 2023
    #2
    CosaLima and Oxbow Thank this.
  4. Aug 20, 2023 #3
    Goodysnap

    Goodysnap Road Train Member

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    Exhaust manifold to EGR cooler connector. They all leak and yes very common. Reseal the entire exhaust manifold and replace the connector with new and all new gaskets.

    The connectors use the same metal J seals as the exhaust manifold sections. You can replace just the seals but the tooling is expensive for 1 time and the cast parts wear as well.
     
    Goodysnap, Aug 20, 2023
    Goodysnap, Aug 20, 2023
    #3
    blairandgretchen, Oxbow, Diesel Dave and 2 others Thank this.
  5. Aug 20, 2023 #4
    CosaLima

    CosaLima Bobtail Member

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    May 20, 2023
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    Thank you so much! I’m trying to find these parts online but am having no luck. Not at home right now to go to the shop. Do you happen to have part numbers or web site where I can look this up? Thank you.
     
    CosaLima, Aug 20, 2023
    CosaLima, Aug 20, 2023
    #4
    Oxbow and Goodysnap Thank this.
  7. Aug 20, 2023 #5
    Goodysnap

    Goodysnap Road Train Member

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    Cummins QuickServe Online

    You can look up parts at the link above. I think you can still get 1 try for free. Just enter your ESN.

    Otherwise any Cummins distributor or dealer should have them on hand.
     
    Goodysnap, Aug 20, 2023
    Goodysnap, Aug 20, 2023
    #5
    Oxbow Thanks this.
  8. Aug 26, 2023 #6
    kwcam

    kwcam Light Load Member

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    Dec 29, 2012
    at the shop
    0
    We had some of these replaced under the emissions warranty, they change them back to the bellows type set up. Any time we have the exhaust manifold off we change them back to the bellows cause you know they will start leaking.
     
    kwcam, Aug 26, 2023
    kwcam, Aug 26, 2023
    #6
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