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Got a toilet question #5420658 05/04/20 10:24 AM
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mclasser Offline OP
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Toilet wasn't flushing correctly; turned out the old fill valve was leaking water out the top. Bought the same replacement part (Flushmaster 400A) and set the height & water fill level correctly as listed in the instructions.

Toilet flushes great again but now once a day, it makes a running noise for like 2 seconds. Doesn't phantom flush but just a running noise. The old busted part never did this. I ruled out a possible bad flapper by adding some food coloring to the tank water; the bowl stayed clean,

Is the new fill valve bad out-of-the-box?


2018 Hyundai Elantra VE
2013 Honda Pilot EX-L 4WD
2002 Honda Accord EX-L

Re: Got a toilet question [Re: mclasser] #5420665 05/04/20 10:35 AM
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JohnnyJohnson Offline
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Could it be your float needs to be adjusted just a hair? Watch it fill if is to close to the top of the drain pipe sometimes the valve may not shut all the way off.


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Re: Got a toilet question [Re: mclasser] #5420666 05/04/20 10:36 AM
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I have noticed the same thing after replacing the internals on 2 different toilets in my house. Since it is so infrequent I decided that I don't care. It has become less frequent over the past year, maybe once a week or so.


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Re: Got a toilet question [Re: mclasser] #5420675 05/04/20 10:41 AM
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Oildudeny Offline
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As mentioned check the float level, is your supply fully opened? if a multi turn valve.

Re: Got a toilet question [Re: mclasser] #5420678 05/04/20 10:44 AM
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mk378 Offline
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If the fill valve keeps opening the water must be going somewhere. Either it is set too high and going down the overflow tube or the flapper is leaking.

You could close the supply valve and without flushing check if the level in the tank drops.

Re: Got a toilet question [Re: JohnnyJohnson] #5420685 05/04/20 10:58 AM
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Fattylocks Offline
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Originally Posted by JohnnyJohnson
Could it be your float needs to be adjusted just a hair? Watch it fill if is to close to the top of the drain pipe sometimes the valve may not shut all the way off.

It is that wee tiny adjustment. I fiddled around with the float level a dozen times before it settled in and was happy.


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Re: Got a toilet question [Re: mclasser] #5420687 05/04/20 11:00 AM
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Paul_Siu Offline
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When you hear that phantom flush, try opening the cover and see where the water level is at. Is it over the top of the tube? If it's going over, the water would run into the bowl.


Paul

Re: Got a toilet question [Re: mclasser] #5420697 05/04/20 11:14 AM
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Aredeeem Offline
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Had the same problem with mine. The round silicone seal on the bottom of the flapper has tiny valleys and bumps, too small to even see or feel that allows water to get past it, lower the water level in the tank, and cause a short phantom re-fill. Take a finger tip dab of Vaseline and run it around and on that seal. Worked for me.

Re: Got a toilet question [Re: mclasser] #5420700 05/04/20 11:16 AM
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Aredeeem Offline
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No need to remove the flapper, just reach in, pull it back and coat the seal. Doesn’t need much.

Re: Got a toilet question [Re: Aredeeem] #5420725 05/04/20 11:57 AM
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MasterSolenoid Offline
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Originally Posted by Aredeeem
Had the same problem with mine. The round silicone seal on the bottom of the flapper has tiny valleys and bumps, too small to even see or feel that allows water to get past it, lower the water level in the tank, and cause a short phantom re-fill. Take a finger tip dab of Vaseline and run it around and on that seal. Worked for me.

So if the 'bottom of the flapper' is leaking, the water should be going into the Bowl.
Add some Food Dye in the tank and next day see if the Bowl has coloring in it / maybe just a poor fitting flapper.
At least you would NOT have to mess with any other components.


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Re: Got a toilet question [Re: Aredeeem] #5420726 05/04/20 11:59 AM
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pandus13 Offline
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Originally Posted by Aredeeem
Had the same problem with mine. The round silicone seal on the bottom of the flapper has tiny valleys and bumps, too small to even see or feel that allows water to get past it, lower the water level in the tank, and cause a short phantom re-fill. Take a finger tip dab of Vaseline and run it around and on that seal. Worked for me.

This (confirmed with 3 different toilets at 3 different houses).

Worst case, a new Fluidmaster replacement flapper is cheap.

Also, some in the house may pull just hard enough to kink the chain into an obstruction.


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Re: Got a toilet question [Re: mclasser] #5420747 05/04/20 12:20 PM
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Dave9 Offline
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There are only 3 places the water could be going to cause it to keep topping off.

1) Evaporation, tank lid off and gale force wind blowing at it. You'd notice. wink

2) Crack in tank, leaking on floor

3) Getting past flapper. if it is a very tiny rate, you might not notice the food coloring.

Flappers get old and harden, and the mating lip can get water deposits or fungus. Clean both, and sometimes I'll put a light layer of silicone grease on the flapper mating seal area and get a few more months out of it before replacement.

Re: Got a toilet question [Re: mclasser] #5420797 05/04/20 01:16 PM
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AZjeff Offline
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The float could be dragging on the standpipe causing strange fill problems. A flapper is $5, how much time does one spend to get a little more life out of one?



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Re: Got a toilet question [Re: mclasser] #5420805 05/04/20 01:20 PM
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Wolf359 Online Content
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The flapper and fill valve go all the time. Should change the flapper the same time you change the fill valve. The water level should be about 1/2 inch to 1 inch below the tube otherwise sometimes the water level will overflow the tube.

Re: Got a toilet question [Re: mclasser] #5420808 05/04/20 01:23 PM
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Reddy45 Offline
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Fluidmaster sells a "contractor pack" of 3 flappers by itself for a reason. These are wear items that should be replaced occasionally. You should also take a small cloth and clean up the flapper mating surface since mineral deposits can grow along that seal.

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