Coolant leaking engine 3.7 L

Discussion in 'KJ General Discussion' started by SWELiberty, Oct 25, 2020.

  1. SWELiberty

    SWELiberty New Member

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    Hi "Sweden need help" I have a JEEP KJ 2005 3.7 L engine has previously changed the radiator and water pump.
    But yesterday I got a coolant leak on the left side of the engine (driver side) I have had to refill the coolant sometimes (small amounts). There is no "water" in the engine oil. See attached photos and the link with a short video.
    SWELiberty
     

    Attached Files:

  2. HoosierJeeper

    HoosierJeeper Gold Supporter/Admin Staff Member Administrator

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    Upper radiator hose? Double check WP and radiator. things can get blown around and drip onto a different side than they originated.
     
  3. SWELiberty

    SWELiberty New Member

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    I have already checked "all" the hoses to and from the radiator.
    Also the water pump and temperature sensor.
     
  4. jeeptorino68

    jeeptorino68 Full Access Member

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    The radiator drain ditting perhaps? Also maybe where the plastic meets the metal center core of the radiator, this will cause a leak but not come from the hoses.
     
  5. SWELiberty

    SWELiberty New Member

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    No not from drain plug. The coolant comes from the engine. The radiator checked water pump is checked temperature sensor is checked. The hoses are checked There is no moisture on these. devices. Watch the video coming from above a heat shield? For manifolds? Does anyone know if there is a freeze plug on the engine block?
     
  6. tommudd

    tommudd Moderator Staff Member Moderator

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    Yes there is
     
  7. SWELiberty

    SWELiberty New Member

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    Does anyone have a "drawing" picture of where they are sitting? Experience of how to change if that is what is wrong?
     
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  8. LibertyTC

    LibertyTC Well-Known Member Staff Member Moderator

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    Hope this may help:
    Here is the factory manual for your 05 http://www.colorado4wheel.com/manuals/Jeep/KJ/2005JeepKJServiceManual.pdf
    Known as Cylinder head Block Drain (not freeze or frost plug)
    If you have a block heater installed also check to make sure it is not leaking from there.
    The block heater uses the front mounted block drain and has electrical wires coming out of it.
    [​IMG]
     
  9. SWELiberty

    SWELiberty New Member

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    THANKS! You are a "hero" I have been searching for this information. Have been a bit "disappointed";)
    as I tried to be as clear as possible with the description of the error and attached both pictures and a video.
    To rule out other causes, what could be the cause of the cooling system leaking.
    So again a big thank you for this information.
    Rgds
     
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  10. LibertyTC

    LibertyTC Well-Known Member Staff Member Moderator

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    When system is completely cold, & in a quiet area...
    A pressure test (may be able to rent the recovery tank kit tester) and listen for air../view potential leak source may help you.