Frustrating Leak from The Toilet Tank

Discussion in 'General Plumbing Help' started by OldmanMike, Jan 13, 2019 at 7:51 PM.

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  1. Jan 13, 2019 at 7:51 PM #1

    OldmanMike

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    OK. Looking for Help. I have moderate experience with replacing toilets and bowls and have replaced & repaired many in my house. Usually no problem. I have a toilet where there is a leak from the toilet tank into the bowl I cannot seem to fix. I replaced the entire flush valve assy (fill tube, flush valve & flapper) as a new assembly. The leak is still there. I replaced the flapper again & this time put a seal around it as I thought this is where the leak was coming from. There is still a slow leak from the tank to the bowl. I also replaced the outer flange from the tank to the bowl. Leak is still there. There is no water coming out anywhere else (leaking to the floor or out of the tank) so I know it's not that. I lose about a tank of water every 12 hours or so. I hate to think I need to swap out the whole toilet just for this but I just can't figure it out. Is it possible I don't have the tank bolted down hard enough to the bowl? I only know of one way water can get from the tank to the bowl but maybe there is something I'm missing. I would appreciate any insight anybody has.
     
  2. Jan 13, 2019 at 10:29 PM #2

    Geofd

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    have you tried to dye the tank ??????
     
  3. Jan 14, 2019 at 12:10 PM #3

    frodo

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    Are your Tank Bolts installed in the following order

    3 stool.jpg
     
  4. Jan 14, 2019 at 12:12 PM #4

    journeyman

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    Is tank cracked around flush valve
     
  5. Jan 14, 2019 at 6:03 PM #5

    Diehard

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    OldmanMike...When you say, "lose about a tank of water every 12 hours or so", may I assume you had shut the water off to make this observation? (Just trying to eliminate the possibility of the valve slowly leaking into the overflow tube without being detected.)

    frodo...Do you think a leak at those tank bolts could find its way into the bowl? I really don't know.
     
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  6. Jan 14, 2019 at 11:25 PM #6

    OldmanMike

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    No cracks in the tank. I checked
     
  7. Jan 14, 2019 at 11:26 PM #7

    OldmanMike

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    Yep. Turned the water off after each repair. I am truly baffled by this.
     
  8. Jan 14, 2019 at 11:29 PM #8

    frodo

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    hell no, that was the scotch talking
     
  9. Jan 14, 2019 at 11:36 PM #9

    frodo

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    --------
     
    Last edited: Jan 15, 2019 at 5:05 AM
  10. Jan 15, 2019 at 12:06 AM #10

    Geofd

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    check the inside of your overflow tube I have run across a few that were cracked
     
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  11. Jan 15, 2019 at 12:07 AM #11

    Geofd

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    dye the tank if you haven't already
     

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