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Old 11-29-2011, 01:03 PM   #1
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Toilet bowl slowly draining

My toilet flushes fine, and it will have about 6 inches of water in it when the cycle is complete, but when I go back a few hours later, most of the water is gone. Sometimes it's actually gone so low that the trap has a gap in it (i.e., there's an open path to the stack.

Is this a problem with the vent?


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Old 11-29-2011, 01:55 PM   #2
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Sounds like a vent problem. Not enough air behind the water and it is siphoning.


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Old 11-29-2011, 03:23 PM   #3
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sounds like the line is partially plugged, thats why its siphoning. In 20 years as a plumber I never had a problem that was a clogged vent unless the line was plugged and blocking off the vent.
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Old 11-30-2011, 09:59 AM   #4
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Thanks Danny.

Not what I wanted to hear, but better to know about it now. I'll check the roof first anyway, since it's easy.
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