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Old 01-13-2011, 08:31 PM   #1
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Phantom Flushing


I have a toilet that is constantly phantom flushing. For example, someone turns the water off at a faucet in the house and the toilet flushes a bit (not entirely,if you know what I mean). Any easy solution to this problem?

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Old 01-13-2011, 11:02 PM   #2
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Phantom Flushing


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Originally Posted by sf2000 View Post
I have a toilet that is constantly phantom flushing. For example, someone turns the water off at a faucet in the house and the toilet flushes a bit (not entirely,if you know what I mean). Any easy solution to this problem?
Check your flapper (the rubber thing in the middle of the bottom of your tank) for a slow leak. You may want to put food dye in your tank (do not flush) to see if it seeps through to the bowl. Another thought is your water level may be set too high. The fill valve should be adjustable. Good luck!

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Old 01-14-2011, 12:04 AM   #3
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Phantom Flushing


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Originally Posted by sf2000 View Post
I have a toilet that is constantly phantom flushing. For example, someone turns the water off at a faucet in the house and the toilet flushes a bit (not entirely,if you know what I mean). Any easy solution to this problem?
does the toilet actually flush or does water run into your tank.


If it is water running into your tank, it would likely be due to a sudden pressure increase (like water hammer) and forcing the valve to open a bit. You could replace the valve if it bothers you but as long as it does it only when you shut off other water, I wouldn't worry about it.
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Old 01-14-2011, 04:09 PM   #4
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Phantom Flushing


On another thread someone suggested putting a water hammer arrestor in the water line under the toilet tank.

If the flapper is not letting water seep down into the bowl all by itself, then each time a surge of water enters the tank, the float should rise a bit higher and seal the inlet a little more tightly and after one or two such bursts, it doesn't do it again until the toilet is used and really flushed.

(If the float is set too high, the water in the tank might overflow into the overflow tube before the level can get high enough to seal the inlet tightly. Be very careful with a float ball attached to a nearly horizontal rod. Trying to bend the rod without unscrewing it and the float from the valve assembly can break the valve assembly if you put too much stress there.)
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Last edited by AllanJ; 01-14-2011 at 04:14 PM.
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