Small Bubbles in coolant when stopped

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  • Juvkam78
    S2Forum Buff
    • Jul 2015
    • 46
    • Country: Norway

    #1

    Small Bubbles in coolant when stopped

    I have noticed that about one minute after i stop my engine hot (94 ABY) i can hear and feel small bubbles in the upper radiator hose, goes away in about 5 minutes. I have no leaks or any signs of cooling problems.. I suspect the cap on the expantion tank not sealing 100%. What do you guys think?

    Juvkam
    Last edited by Juvkam78; 18 September 2015, 18:40.
    Nur quattro

    1994 S2 Coupe
  • Monkeymagic
    S2Forum Possessed
    • Mar 2012
    • 3419
    • Country: England

    #2
    Mine does the same mate it should be the after run pump pumping for a few minutes.

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    • Juvkam78
      S2Forum Buff
      • Jul 2015
      • 46
      • Country: Norway

      #3
      This happen when the after-run pump is not running, at least i can`t hear it.. When realy hot i hear the pump well
      Nur quattro

      1994 S2 Coupe

      Comment

      • Juvkam78
        S2Forum Buff
        • Jul 2015
        • 46
        • Country: Norway

        #4
        Problem found (I think)

        Think i found the problem today, the upper hoseclamp on the top radiator hose has cut its way through the hose, causing a tiiiny leak.. Guess a silicone hose kit is my solution
        Nur quattro

        1994 S2 Coupe

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