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Radiator Hoses Collapsing ISX Prostar

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by wtokhi, Jul 15, 2019.

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  1. Jul 15, 2019 #1
    wtokhi

    wtokhi Light Load Member

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    Nov 3, 2017
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    hey y’all
    We have an 08 prostar with an ISX that I rebuilt 6 months ago, I opened the hood one morning and found that the lower radiator hose on the driver side had collapsed as u can see in the picture, my first thought was radiator cap but that and the reservoir are new along with the radiator hoses, they’re not spring lined. It seems to only do it when sitting, I had two heater hoses start to leak but I’m not sure if it’s because of this, there’s no vacuum leaks in the cooling system as far as I can tell, oh and radiators new. Not sure if this related but the idle is kind of jumpy with no codes. Keeps temperature fine. Any help appreciated thanks
     

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    wtokhi, Jul 15, 2019
    wtokhi, Jul 15, 2019
    #1
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  3. Jul 16, 2019 #2
    Trucker Kev Paid Tourist

    Trucker Kev Paid Tourist Road Train Member

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    Homer Glen I'll South Chicago suburbs when home
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    yeah get the stainless steel metal hoses look online you can find them.. guys been selling radiator tubes for almost 20 years now he always advertises in the moving out newspaper..
     
    Trucker Kev Paid Tourist, Jul 16, 2019
    Trucker Kev Paid Tourist, Jul 16, 2019
    #2
    Intothesunset Thanks this.
  4. Jul 16, 2019 #3
    wtokhi

    wtokhi Light Load Member

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    Ill look into those but it still wouldn’t find the main cause of why it’s doing it
     
    wtokhi, Jul 16, 2019
    wtokhi, Jul 16, 2019
    #3
  5. Jul 16, 2019 #4
    Heavyd

    Heavyd Road Train Member

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    Next time you see this after sitting all night, just pop off your rad cap and see if you are getting a bit of vacuum relief. If not, then the hose is collapsing on its own.
     
    Heavyd, Jul 16, 2019
    Heavyd, Jul 16, 2019
    #4
    MartinFromBC, wtokhi, Diesel Dave and 1 other person Thank this.
  7. Jul 16, 2019 #5
    Expeditor

    Expeditor Medium Load Member

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    Mar 5, 2018
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    Take hose off and inspect for deterioration inside. Seems like hose is weak and cant hold its shape. That is cause by the coolant cooling after being hot. Take a plastic water bottle, at room temperature, and drink half the liquid . Now put the half empty bottle of room temp water in the fridge. When you check on it in a couple of hours you will see the bottle has collapsed inwards.
     
    Expeditor, Jul 16, 2019
    Expeditor, Jul 16, 2019
    #5
    MartinFromBC and wtokhi Thank this.
  8. Jul 16, 2019 #6
    Intothesunset

    Intothesunset Road Train Member

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    Hoses are only good for 3 years.
    Did you rebuild engine yourself??
     
    Intothesunset, Jul 16, 2019
    Intothesunset, Jul 16, 2019
    #6
    wtokhi Thanks this.
  9. Jul 16, 2019 #7
    wtokhi

    wtokhi Light Load Member

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    The hose is new, less than two months old
     
    wtokhi, Jul 16, 2019
    wtokhi, Jul 16, 2019
    #7
  10. Jul 16, 2019 #8
    wtokhi

    wtokhi Light Load Member

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    Yes I rebuilt it myself last January, the hoses are new
     
    wtokhi, Jul 16, 2019
    wtokhi, Jul 16, 2019
    #8
    Intothesunset Thanks this.
  11. Jul 16, 2019 #9
    wtokhi

    wtokhi Light Load Member

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    When I took off the cap I believe it did release the hose
     
    wtokhi, Jul 16, 2019
    wtokhi, Jul 16, 2019
    #9
    MartinFromBC Thanks this.
  12. Jul 16, 2019 #10
    wtokhi

    wtokhi Light Load Member

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    The hose is new so I don't think thats it
     
    wtokhi, Jul 16, 2019
    wtokhi, Jul 16, 2019
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    Intothesunset Thanks this.
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