We have 3 comodes in our house. 2 upstairs and 1 downstairs. One of the 2 upstairs works fine and the other one(in the half bath) doesn't want to flush properly. We have put liquid Plumber down the drain numerous times. When flushing this comode it bubbles back up in the sink. It also comes to the top of the bowl, it nevers overflows though. What could cause this? Please help!!

U have partial blockage. Have to use snake to clear. Run snake in about 10 feet.

Good luck

Chuck

Where do i run the snake through?

Your blockage is well after the toilet so remove the sink trap and rod staright into the wall with a 1/4" snake. You are going to hit a 90m, elbow about 4" inside so be sure to keep turning the snake as you push it in. Your cap lock key is down

Hmmmm...

I wouldn't snake through the sink drain for this blockage guys... ;)

It sounds like a clog in the larger drain pipe so you either snake from the roof vent or if that isn't realistic you pull the toilet and snake the drain from the toilet drain pipe.

Here, if, for example, the clog was a diaper and the 1/4" snake snagged it while pulling back through an 1.5" or 2" sink drain pipe it could bind the snake/diaper up so tight that the snake could actually get stuck and compound the problem ten-fold!

Go ahead...ask me how I know that kinda stuff... :D

Anyway, in this case, I would try to use a closet auger tool 1st (see image)... see if I got lucky and snagged the clog close to the toilet (many sink drains do connect under the floor directly at the toilet, right?). If that failed I would rent a small electric snake with 3/8" cable and I would run it down the vent stack from this bathroom or I would lift the toilet, plastic the walls and snake the drain from there. Wear safety goggles and leather gloves.

Anyway, that's my thoughts all...

Mark

I agree with Mark.

Remove toilet and go through there if u can't go from roof.

Chuck

In post #4 I said to remove the trap not rod through it. I believe the clog is well beyond the reach of a closet auger since the blockage includes the sink which is down stream at a junction. However, I do understand Mark's logic too.

YUP! And I know you wouldn't have suggested that, Bob, but I can see why you thought that with me telling them NOT to snake through the trap... but that wasn't intended for you... ;)

I revised my first line in post #5 to indicate so, Bob.

Thanks guys.

Thanks everyone!! We got it fixed by putting a snake through the main line. We found tree roots again.. This is after cutting the tree down and killing the roots. So much for that... Again, Thanks!!

Good news! Thank you for updating us... :)