Help me figure a coolant leak out please

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by VolunteerTrucker, Sep 23, 2021.

  1. VolunteerTrucker

    VolunteerTrucker Light Load Member

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    Dec 8, 2014
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    2016 Freightliner Cascadia 125 with a DD 15

    I have coolant leaking really bad from what looks to be the crossover hot pipe under where the Delta P sensors sit. Drains probably a gallon of coolant over night with the engine off. Truck runs fine and no over heating right now. No white smoke that I’ve seen either. You would think if it’s coming from the crossover pipe that it’s an EGR cooler, but I’ve always been told that it doesn’t leak externally because it’s evaporated in the exhaust. Really puzzled. Any comments are appreciated. I’ll check it in to the TA and have it pressure tested in the morning. It’s hard to see for sure where it’s coming from because when I turn it on to try and get it to leak faster the fan blows the coolant everywhere, and there’s a top of hoses and pipes around.
     
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  3. Rideandrepair

    Rideandrepair Road Train Member

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    There’s a simple answer to be found in your question. You’ll have to figure it out yourself. I hope you spend a bunch of money trying.
     
  4. VolunteerTrucker

    VolunteerTrucker Light Load Member

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    Dec 8, 2014
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    It’s a water pump lmao
     
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