toto toilet not completely flushing

Discussion in 'Toilet Forum discussions' started by Kaitlinlee, Aug 9, 2016.

  1. Kaitlinlee

    Kaitlinlee New Member

    Joined:
    Aug 9, 2016
    Location:
    Minnesota
    We have a TOTO CST454CEFG-01 Drake II 2-Piece Toilet with Elongated Bowl and Sanagloss,1.28 GPF, put in about 2 years ago. For about a year now it doesn't fully flush probably 3 times out of 5. It use to be for awhile if you flushed once, waited for it to refill, then flushed again it would fully empty. Now that works about 70% of the time. We have snacked the toilet and didn't run into anything. We removed the toilet and didn't find anything stuck either. What else could we do? Is it just a lemon of a toilet? This is a very high use toilet, used as the main toilet by our family of four We put another one in our basement bathroom at the same time. This is a very low use bathroom but that toilet works perfectly still.
     
    Last edited by a moderator: Aug 9, 2016
  2. Terry

    Terry Administrator Staff Member

    Joined:
    Aug 17, 2004
    Occupation:
    Plumber
    Location:
    Bothell, Washington
    Most likley you have something in the trapway slowing things down.
    It could be something as simple as Q-Tips hanging things up. A snake will go right by them and not move them out. I would remove the bowl and see if you can see anything at the bottom. We use an auger with a 1.-5/8" head on it.
    The homecenter augers are 7/8".
     
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  4. Kaitlinlee

    Kaitlinlee New Member

    Joined:
    Aug 9, 2016
    Location:
    Minnesota
    We did take it off and didn't see anything. Is there something we can do with the toilet removed? I also believed we just have something stuck.
     
  5. jadnashua

    jadnashua Retired Defense Industry Engineer xxx

    Joined:
    Sep 2, 2004
    Occupation:
    Retired Systems engineer for defense industry.
    Location:
    New England
    What is the water height in the tank? If that's not right, it loses a bit of head pressure, and may not release the proper amount of water.

    Take a bucket, note where the bowl water height is, then slowly add water. See if it rises, and then, wait a bit to see if it stays there. One symptom of a random (alternate is more common) failed flush is if the bowl is not refilling properly...the first one doesn't work well, but the bowl gets full, so it works the next time.

    The bowl gets refilled by the hose going into the overflow tube. Make sure it has not come off of the clip, and points into the overflow tube, or the bowl won't get refilled properly. If that hose got kinked for some reason, the fill ratio of the tank/bowl won't be right, and your bowl won't refill properly.

    If those mechanics are all correct, it's likely something caught in the trapway.
     
  6. Wallijonn

    Wallijonn Member

    Joined:
    Jun 7, 2013
    Occupation:
    computer technician
    Location:
    Arizona
    Easy: switch the toilets. If the problem doesn't move then it's probably something in the pipe, like a tree limb growing inside, or you're using the wrong type of paper and you have clogs along the drainage pipe.
     
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