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ownstairs toilet level drops

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  • 31-12-2020 7:22pm
    #1
    80j2lc5y7u6qs9
    Closed Accounts Posts: 957 ✭✭✭


    Should be Downstairs toilet level drops, sorry cannot edit title

    My downstairs toilet fills and comes up to the usual level in the bowl but then the level drops maybe three inches. Why would this be? It has been fine for ages the ballcock level is OK and it refills good


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    #2
    greasepalm
    Registered Users Posts: 5,261 ✭✭✭greasepalm


    Interesting as mine might only drop an inch or so.Wonder if outlet pipe is partially blocked and when flushing upstairs loo a vacuum is in pipe and removes some water from bowl downstairs.

    The outlet pipe on toilet is at an angle to hold a certain amount but with a vacuum in pipe ??


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    #3
    mickdw
    Registered Users Posts: 23,281 ✭✭✭✭mickdw


    Ya id say it lack of vent or too far from vent and flows in the pipe are dragging some of the water from the toilet instead of being able to pull in air from vent pipe instead.


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    #4
    80j2lc5y7u6qs9
    Closed Accounts Posts: 957 ✭✭✭80j2lc5y7u6qs9


    mickdw wrote: »
    Ya id say it lack of vent or too far from vent and flows in the pipe are dragging some of the water from the toilet instead of being able to pull in air from vent pipe instead.
    how come it never happened before


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    #5
    80j2lc5y7u6qs9
    Closed Accounts Posts: 957 ✭✭✭80j2lc5y7u6qs9


    greasepalm wrote: »
    Interesting as mine might only drop an inch or so.Wonder if outlet pipe is partially blocked and when flushing upstairs loo a vacuum is in pipe and removes some water from bowl downstairs.

    The outlet pipe on toilet is at an angle to hold a certain amount but with a vacuum in pipe ??
    i wondered if there was an upstairs connection. Upstairs works fine. How would i know if a vacuum is being created?


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    #6
    greasepalm
    Registered Users Posts: 5,261 ✭✭✭greasepalm


    Check your sewage pipes as anything could be down there,toilet paper or foreign objects stuck and restricting free flow.


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    #7
    Dupont
    Registered Users Posts: 950 ✭✭✭Dupont


    A blockage can cause it. Takes a couple of flushes to build up enough water to clear it then it will syphon the bowl down a bit when it goes


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    #8
    greasepalm
    Registered Users Posts: 5,261 ✭✭✭greasepalm


    Try a double flush upstairs and downstairs or bucket of water in downstairs with flush as more water = more shifting power.


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    #9
    mickdw
    Registered Users Posts: 23,281 ✭✭✭✭mickdw


    Levi Tight Kitty wrote: »
    how come it never happened before

    It could be your vent is blocked or near blocked.


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