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    sdma49's Avatar
    sdma49 Posts: 1, Reputation: 1
    New Member
     
    #1

    Feb 26, 2010, 11:58 AM
    Suddenly flushing toilet causes sink to gurgle... why?
    Just starting today flushing my toilet causes the sink in the same room to be noisy as if toilet is running through sink drain...
    speedball1's Avatar
    speedball1 Posts: 29,301, Reputation: 1939
    Eternal Plumber
     
    #2

    Feb 26, 2010, 12:45 PM

    This tells you the lavatory roof vent's clogged and the toilet's attempting to vent through the lavatory trap.
    The solution would be to snake the lavatory roof vent. Put out enough cable to reach the base and 20 feet more. Good luck, Tom

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