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My toilet just starts running on its own. It turns on and off every 15 mins or so, what's wrong with it?

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Manage My Life
Hi TedinNJ,

Thank you for your response. It is important to realize that using dye tablets or adding food coloring to the toilet tank are not preventative solutions and will often fail to detect a toilet that is leaking intermittently. It is frusterating to spend time dropping dye tablets and waiting for a result that may be inaccurate. The LeakAlertor lets you know when your toilet is leaking, giving you the peace of mind that you are not wasting money and water.
by Manage My Life
August 2nd, 2010
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Manage My Life
You can also put dye in the toilet tank to see if it leaks into the bowl. You can get dye for this purpose at hardware or plumbing supply stores, or just use some clothing dye.

Wait for everything to calm down after flushing, so that there should be no water flowing. Then add dye to the tank. If the flapper is leaking, the dye will show up in the bowl.
by Manage My Life
July 26th, 2010
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Manage My Life
Leaking flappers are the #1 cause of toilet leaks. Flappers can start leaking within a day of being replaced. As mentioned, this can be due to harsh chemicals (like chlorine or bleach), or being seated improperly. I wanted to let you know about a great new product that makes detecting toilet leaks easy. The LeakAlertor electronically monitors your toilet and notifies you with visual and audible alerts when the flapper is leaking. Toilet leaks often go undetected, wasting a significant amount of water and money. LeakAlertor can help. It installs in seconds, without tools.
by Manage My Life
July 16th, 2010
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Manage My Life
This has happened to me several times and I am pretty sure it is a flapper leak as the Expert suggested. The flappers are made of cheap rubber material which barely covers the tank drain. In addition, if you use tank cleaning tablets they usually contain a lot of bleach which destroys the rubber parts of the flush system.
by Manage My Life
November 17th, 2008
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Manage My Life
It sounds like it is leaking water out of the tank very slowly. When the water level in the tank gets low enough, a valve opens up (which is usually controlled by an arm with and end that floats up and down with the water level). Take the lid off the tank and look inside - you may need to watch it for several minutes to see the water level changing. You should also flush it several times and watch the different parts operate to get a better feel for how your toilet tank controls itself. Often water can start leaking out around the flapper in the bottom of the tank - you may need to reposition this flapper. Sometimes the high water level of the tank is simply set too high. The tank should stop filling before the water reaches an overflow tube. The position of the float controls the fill level - this can often be adjusted by turning a screw located near the pivot point of the arm, or sometimes by bending the arm slightly if it is made of metal.

You can buy toilet tank replacement parts / kits at most hardware stores.
by Manage My Life
November 10th, 2008
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