Toto CST714 Caorusoe toilet loud noise and won't stop pouring water

Discussion in 'Plumbing Forum, Professional & DIY Advice, Tips & ' started by roman29, Jun 14, 2014.

  1. roman29

    roman29 New Member

    Messages:
    3
    Location:
    Panama
    Hello,

    I have a Toto Toiler about 1 year and a half old. It has suddenly began doing a very loud noise and after the tank it's filled it won't stop pouring water. I guess that both problems are related as they began at the same time. I have seen other threads regarding loud noises but none with non stop flowing water at the same time.

    Here I post a dropbox link to the video so I can show it better.

    [video]https://www.dropbox.com/s/vaouv4sr2qjfouv/IMG_3021.MOV[/video]

    Any help would be very appreciated.
    Thanks
  2. Terry

    Terry Administrator Staff Member

    Messages:
    15,000
    Location:
    Bothell, Washington
    You may want to remove the tank lid and look inside to see what's happening.
    If the water keeps running, it's a bad flapper, or something with the fill valve. Sometimes that's an adjustment and sometimes it needs a new part.
  3. jadnashua

    jadnashua Retired Defense Industry Engineer xxx

    Messages:
    21,995
    Location:
    New England
    Once you've looked, turn off the water supply or you'll be surprised at your next water bill! A continuously running pipe can waste a huge amount of water, and your water and sewer bill will go up accordingly. And, if you have a septic system, flooding the tank is not a great idea, either.
  4. roman29

    roman29 New Member

    Messages:
    3
    Location:
    Panama
    update

    Thanks for your answer. How do I tell if it's the flapper or the fill valve? Is this something I can fix myself or I should hire a professional? Here is a 5 second video of how the inside of the tank looks.

    [video]https://www.dropbox.com/s/ygxvyvm1ps8aoh3/IMG_4021%20copy.MOV[/video]

    Thanks!
  5. Reach4

    Reach4 Active Member

    Messages:
    2,229
    Location:
    IL
    Is the water up to the overflow and overflowing? If so, it is the fill valve. It would be the fill valve that would be singing.

    If the water is not overflowing, or maybe you will want to test anyway, turn off the water. Does the water in the tank level drop? If so, the flapper valve or flapper is (also?) bad.
    Last edited: Jun 15, 2014
  6. roman29

    roman29 New Member

    Messages:
    3
    Location:
    Panama

    Yes the water is up to the overflow and overflowing. The water in the tank level doesn't drop so I guess the flapper is OK.

    My Toto model is ST706. Do you know where I can buy the fill valve for this model. Looking for information online I found this:

    http://www.****.com/itm/TOTO-TSU99A...d=100204&prg=9919&rk=1&rkt=20&sd=111282523426

    Do you know if this would work? Do you recommend any other seller?

    Thanks!!
  7. wjcandee

    wjcandee Wise One

    Messages:
    1,850
    Location:
    New York, NY
    Just get this valve at Lowe's (or many hardware stores):

    http://www.lowes.com/pd_336988-868-528MPK_0__?Ntt=528mpk&UserSearch=528mpk&productId=3284948&rpp=32

    You want the MaxPerformance one like on the link, with a silver cap. HD doesn't carry it. Other than the silver cap ones, they will not refill the bowl with the right amount of water.

    It's a DIY job. 5-10 minutes max. All you need is a wrench, and maybe not even that.

    Korky has good instructions with the valve, but here's a video they made as well. You can see how easy it is to do.

    Last edited by a moderator: Jul 19, 2014
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