overheating cummings

Discussion in 'Engine and Performance' started by CamoDieselPower, Mar 4, 2014.

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  1. CamoDieselPower

    CamoDieselPower Junior Member

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    when i go down the road the truck overheats and shoots out the coolant out of the reservoir untill there is about 1/4 of the coolant left in the radiator. when i slow down the truck cools down. im not getting any white smoke coming out of the exhaust. i have already replaced the water pump cause it got messed up and have already replaced the radiator and it still overheats.
     
  2. Power247

    Power247 Senior Member

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    Welcome to RF... I didn't see you mention so I thought I would ask the simple first... How about the thermostat? Did you replace it with the radiator or water pump? Hoses too?

    Also, you said no white smoke but are you getting and water in you engine oil?

    sent thru a cloud of smoke
     
  3. Bluesmoke91

    Bluesmoke91 2nd GEN Site Mod Staff Member

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    if you did swap the t-stat. Did you make sure you put it in facing the correct way?
     
  4. NWRQC

    NWRQC Senior Member

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    What about any mods to your truck? You provide very little info in your post.
     
  5. NYCruiser

    NYCruiser Senior Member

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    How many miles? I've seen some tired diesels in the big rigs overheat under load from combustion gas getting into the coolant. Hope that's not the case.
     
  6. Trupiano

    Trupiano Registered User

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    Is there a possibility that your head gasket is blown?
     
  7. smykowski

    smykowski Senior Member

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    That's what I think. Especially when he said it blows all the coolant out of the reservoir.
     
  8. DannyMK2

    DannyMK2 Senior Member

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    this is probably a dumb question, but did you bleed the air out of the system when you changed the water pump and radiator?
     
  9. smykowski

    smykowski Senior Member

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    The overheating part would make sense if there were air trapped in the cooling system. The fact that the system is becoming pressurized to the point it forces practically all the coolant out, sounds like the cooling system is part of the combustion chamber. BUT, you are right, bleeding the cooling system is good (and cheap) troubleshooting step vs. a new hg.
     
    Last edited: Mar 19, 2014
  10. DannyMK2

    DannyMK2 Senior Member

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    ive had an air bubble shoot coolant out of the reservoir before.
     

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