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12 v 92 coolant issue

Discussion in 'Engines' started by bluesuit, Feb 17, 2014.

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  1. bluesuit, Feb 17, 2014
    #1
    bluesuit

    bluesuit Member

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    Dear All:
    On cold engine I attempted to check coolant level of expansion tank. When I open the radiator cap coolant came spewing out under some pressure. What y'all think????
  2. Capt Bill11, Feb 17, 2014
    #2
    Capt Bill11

    Capt Bill11 Senior Member

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    Expansion tank cap stuck?

    Over flow tube from the expansion tank cap to the coolant tank blocked?

    Head gasket issue?
  3. Capt J, Feb 17, 2014
    #3
    Capt J

    Capt J Senior Member

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    The cap is doing it's job if there still is a little pressure in the system when the engine is cold. I've seen this happen on engines with overflow bottles. If there's a lot of pressure than I'd start worrying.
  4. Capt Ralph, Feb 17, 2014
    #4
    Capt Ralph

    Capt Ralph Senior Member

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    Put the cap back on, walk away, dream of warmer days.
    Some time earlier, the block was colder than when you opened the cap. Just a couple of degrees caused the expanding coolant to roll out.
    Should of happened to both mains. If not, replace the caps on both next ER visit.
    ,rc
  5. RB480, Feb 18, 2014
    #5
    RB480

    RB480 Senior Member

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    I had this happen on our 892's. Turns out the port engine had a kink in the expansion tank hose. New hose and it's back to normal.