Toto Toilet leaking from hole in the back of the Toilet

Discussion in 'Plumbing Forum, Professional & DIY Advice' started by Alexnu, Jun 19, 2021.

  1. Alexnu

    Alexnu New Member

    Joined:
    Jun 19, 2021
    Location:
    California
    I bought a Toto toilet from a friend and I installed, but I noticed it's leaking from the bottom, I thought I had done something wrong installing it, but after a few tries I got suspicious and remove the toilet and tried it putting the toilet on the top of two buckets and flushed it from there and noticed that it leaks from a small hole located in the back of the toilet. I'm attaching a picture.

    That small hole looks it is from factory, and a plumber suggested on the phone to just cover the hole with putty or something, but I'm curious why if the hole is from the factory why is it leaking from there? did it have a plug in that hole?

    PXL_20210619_150439410.jpg
     
    Last edited by a moderator: Jun 19, 2021
  2. Reach4

    Reach4 Well-Known Member

    Joined:
    Sep 25, 2013
    Location:
    IL
    There are holes cast for venting during manufacture, and those should be plugged later during manufacture. The stuff they use for that would be more durable than normal plumbing putty. You would want something that hardens.
     
    Alexnu likes this.
  3. Sponsor

    Sponsor Paid Advertisement

     
    Alexnu likes this.
  4. Alexnu

    Alexnu New Member

    Joined:
    Jun 19, 2021
    Location:
    California
    Thanks for your reply, So you are saying that hole was plugged from factory and somehow the plug fell off. I guess I can put epoxy or something to cover the hole. I was a bit worried to cover the hole, but I guess it makes sense that that hole is supposed to be covered otherwise it will continue leaking every time the toilet is flushed.
     
  5. Terry

    Terry Administrator Staff Member

    Joined:
    Aug 17, 2004
    Occupation:
    Plumber
    Location:
    Bothell, Washington
    Yes, epoxy may work on that. And it is pretty common to see patches on bowl where they had holes to let hot air out. Toilets shrink a lot in the kilns while being fired. Good job on being a good detective. :)
     
    Alexnu likes this.
  6. Alexnu

    Alexnu New Member

    Joined:
    Jun 19, 2021
    Location:
    California
    Thanks!
    I'll try with epoxy.
    I was going crazy when I was installing it, I used 3 wax rings and installed it carefully but it was leaking no matter what that's when I decided to remove it and try like this, pouring water with another bucket.

    PXL_20210619_171151699.jpg
     
Similar Threads: Toto Toilet
Forum Title Date
Plumbing Forum, Professional & DIY Advice I need to replace the flush valve on our TOTO CST416M Aquia II Toilet. The supply line is not acces Nov 25, 2020
Plumbing Forum, Professional & DIY Advice Toto 1.6GpF Toilet Sits Idle After Flush for 45 Seconds, Then Refills ! May 30, 2019
Plumbing Forum, Professional & DIY Advice Need advice for replacement of Toto Pacifica 2-piece toilet May 25, 2018
Plumbing Forum, Professional & DIY Advice Video of chugging in my pipes caused by flushing Toto Drake toilet, can anyone help? Jan 11, 2018
Plumbing Forum, Professional & DIY Advice Toilet Issues with low flow Toto toilet May 1, 2017

Share This Page