Toilet bowl fills up 3/4 before flushing


Old 05-22-19, 08:04 AM
Thread Starter
Join Date: May 2019
Location: United States
Posts: 1
Toilet bowl fills up 3/4 before flushing

I recently purchased a new house and the upstairs toilet will fill up to about 3/4 capacity before it will flush. Once it starts flushing, it will flush just fine. Not slow to flush or anything like that. I had to replace the flooring in the bathroom, so I replaced the wax ring with one of those blue rubber rings and still have the same issue. I've never had a toilet do this before so I am stumped as to what could be the cause. Any help would be appreciated.

Thank you
Sponsored Links
Old 05-22-19, 09:28 AM
Group Moderator
Join Date: Mar 2003
Location: NC, USA
Posts: 19,867
Likes Received: 75
Get a bucket and put about a 1 1/2 gallons of water into it. Quickly pour the water into the center of the bowl. If that causes the toilet to flush then the drain line is likely OK and the problem is in the toilet. In order to flush the water from the tank must enter the bowl quickly enough. Clogging of the passage or holes under the rim or blockage elsewhere can cause the problem you describe. This is sorta common with people who use in tank blue cleaners. Chunks break off or the hangers get sucked down the tank and stuck in the passages of the bowl.

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Thread Tools
Search this Thread
Display Modes