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Thread: Toto Guinever flapper leaking AGAIN

  1. #1
    DIY Junior Member k9's Avatar
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    Default Toto Guinever flapper leaking AGAIN

    Terry can you advise once again please.

    Installed another new Toto Guinever toilet, the first one we installed about 6 month or so ago had the same problem as this one. The flapper is leaking about an inch of water.
    The first one we installed in our house was fixed by replacing the flapper. Toto was great about sending a new flapper out and even sent a proto type for us to try, and thats what did the trick for that toilet.
    Now this new toilet is having the same problem. Is this this the norm? after all 2 out of 2.
    I'm going to see if this one fixes itself over the next couple of days and if not I will call Toto again.
    Last edited by k9; 11-08-2010 at 04:57 PM.

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    Retired Defense Industry Engineer jadnashua's Avatar
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    Wonder if excessive heat during storage might warp the rubber components. Once installed, the water acts as a moderator and the pressure straightens things out, but if it was warped badly before installation, it could be a problem. I've not seen that, but our local temperature extremes aren't as large as they are in a Phoenix summer.
    Jim DeBruycker
    Important note - I'm not a pro
    Retired Defense Industry Engineer; Schluter 2.5-day Workshop Completed 2013, 2014

  3. #3
    DIY Junior Member k9's Avatar
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    Quote Originally Posted by jadnashua View Post
    Wonder if excessive heat during storage might warp the rubber components. Once installed, the water acts as a moderator and the pressure straightens things out, but if it was warped badly before installation, it could be a problem. I've not seen that, but our local temperature extremes aren't as large as they are in a Phoenix summer.
    Its still leaking a inch of water, I know it was shipped from California though. Im going to call Toto Monday to see if they will send me another proto type flapper.

  4. #4
    DIY Junior Member k9's Avatar
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    OK Toto is sending me a new flush valve and flapper.
    Long ago I posted when I had this same problem, Terry mentioned to check to see if there were any bumps under the FV Seat. So I checked and sure enough there are 3 bumps of the white porclin drips.
    I tried to use emory cloth to get rid of them to no avail, That stuff is hard.
    Any other advice?
    I have filled up the tank just to the bottom of the flush valve to see if thats where it leaking.

  5. #5
    Forum Admin, Expert Plumber Terry's Avatar
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    If emory cloth and reinstalling doesn't work, then silcone caulk should work under the flush valve.
    You will know soon enough.
    Once the tank is full, turn off the water and see if the level drops.

    If the water drains out lower then the flapper, then it would be the seal under the flush valve.

  6. #6
    DIY Junior Member k9's Avatar
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    will do
    thank you

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