Toto UltraMax II weak flush

Discussion in 'Toilet Forum discussions' started by scsiguru, Jul 28, 2020.

  1. scsiguru

    scsiguru New Member

    Joined:
    May 17, 2006
    Location:
    West Virginia
    I've replaced a flapper on this unit over the years and I think maybe even a flush valve. Over the last couple of months I've notice that the flush has been weak (but it still does a complete flush) on occasion. This weak flush issue has been occurring more frequently as of late.

    Could the flush valve be going bad? Or is another issue causing this weak flush? Has anyone else run into this same issue? I don't want to start replacing parts if I don't have to. Thanks!
     
    Last edited: Jul 28, 2020
  2. Sylvan

    Sylvan Still learning

    Joined:
    Sep 23, 2004
    Occupation:
    plumbing - fire suppression - boiler inspector
    Location:
    New York
    This is why I use Gerber as up to now not a single call back even those installed over 15 years ago

    As long as the flapper stays up long enough to drain most of the tank and the water level is 1" below the over flow tube it should work

    You may have to hold the handle down until then tank is empty
     
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  4. Terry

    Terry Administrator Staff Member

    Joined:
    Aug 17, 2004
    Occupation:
    Plumber
    Location:
    Bothell, Washington
    Normally that is something in the trapway slowing things down. it can happen on any brand of toilet.
    The trapway on the TOTO zips things right on down, as long as there are things like wipes, Q-Tips, makeup pens, small toys
    When the trapway is clear, it sucks the water and waste right out

    The fill valve refills the bowl after a flush. With a full bowl, the flush gets better
    New flappers often are adjustable for how long they float.

    I have the Ultramax II in my home, works great, and made in the USA, unlike Gerber that's made in China. I like to support American industry.
     
    Last edited: Jul 28, 2020
  5. scsiguru

    scsiguru New Member

    Joined:
    May 17, 2006
    Location:
    West Virginia
    Thanks Terry...not sure what could have been flushed down the toilet...it's just my wife and I with no kids in the house that would flush things that shouldn't...lol
     
  6. Terry

    Terry Administrator Staff Member

    Joined:
    Aug 17, 2004
    Occupation:
    Plumber
    Location:
    Bothell, Washington
    In my experience, nobody ever puts anything in the toilets, but I sure find a lot of stuff.

    "Oh! Is there where that went?"

    [​IMG]
     
  7. scsiguru

    scsiguru New Member

    Joined:
    May 17, 2006
    Location:
    West Virginia
    That's incredible!! I may just swap out the flush valve and see if that makes a difference. I'll need to find the correct part since it's been a while since I've changed one on the three Ultramax II Toto's I have.
     
  8. Reach4

    Reach4 Well-Known Member

    Joined:
    Sep 25, 2013
    Location:
    IL
    Found pens? Pens seem to disappear a lot.
     
  9. Terry

    Terry Administrator Staff Member

    Joined:
    Aug 17, 2004
    Occupation:
    Plumber
    Location:
    Bothell, Washington
    Yes, plenty of pens too.
     
  10. jadnashua

    jadnashua Retired Defense Industry Engineer xxx

    Joined:
    Sep 2, 2004
    Occupation:
    Retired Systems engineer for defense industry.
    Location:
    New England
    Two things to check first:
    - make sure that the hose from the fill valve is pointing down the overflow tube and hasn't come off and is filling the tank. The toilet will not flush right if the bowl's water level is not proper
    - make sure that the tank level is proper, normally about 1/2-1" below the top of the overflow (on some models, there's a mark on the tank for full).

    The fill valve controls how much water gets into the tank and the bowl. The flush valve (in this toilet, it's the flapper and assembly) initiates the flush. If the level is proper in both the bowl and the tank, and the flapper stays open as designed (using the wrong one, or not adjusting an adjustable one properly, or having the chain the wrong length so it can't pull it up as far as it should can result in a poor flush.
     
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