Toilet bowl water suddenly sucked out – why?

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    • #276429
      MasterPlumbers
      Keymaster

      Just recently, the water in the toilet bowl has been sucked out down the pipes. Note the toilet reservoir does not empty, the standing water in the bowl is emptied as if it is being drawn out by a vacuum. This must have someting to do with the apaartment building that we live in. Does anyone know why this is happening and how to fix it? While it happens when other residents flush their toilets, it often seems to just happen by itelf without warning.
      Thanks
      MNM

    • #294131
      Retired plbg1
      Participant

      Sounds like you vent is stopped up are there is no vent, have a Plumber come and check it out. The water syhones out only if you have no vent.

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