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12 v 92 coolant issue

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

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  1. bluesuit

    bluesuit Member

    Joined:
    Apr 15, 2013
    Messages:
    71
    Location:
    new orleans
    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

    Capt Bill11 Senior Member

    Joined:
    Feb 27, 2006
    Messages:
    1,447
    Location:
    Sarasota/Ft. Lauderdale FL
    Expansion tank cap stuck?

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

    Head gasket issue?
  3. Capt J

    Capt J Senior Member

    Joined:
    Jul 11, 2005
    Messages:
    14,058
    Location:
    Fort Lauderdale
    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

    Capt Ralph Senior Member

    Joined:
    Sep 8, 2004
    Messages:
    10,510
    Location:
    Satsuma, FL
    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

    RB480 Senior Member

    Joined:
    Feb 8, 2011
    Messages:
    226
    Location:
    New Buffalo, MI
    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.