What causes a toilet in a downstairs condo to start bubbling for no apparent reason?

Answer 1

it may be the shutt off valve near the floor.try to turn it clockwise while the pipes are vibrating and toilet is filling.if the noise stops you may have to change valve,or leave it in its new position.it could also be the fill valve in the tank causing the noise.

Answer 2

Chances are you have by now found out there was more to it than bubbles. The main sewer line is clogged and dirty water and much more uglyness is on its way. The sewer line needs to be roto rootered.

Answer 3

Pipes may make noise after the toilet tank is refilled for several reasons. A pipe may be loose. It could also be the momentum of the water filling the tank and then suddenly having to stop. Rather than stopping right away, the water continues and causes a vibration after it is forced to stop.

Answer 4

Toilet bubbling and draining the bowl = Mainline stoppage. Could be just the one bathroom that toilet is in, or the whole house. If all the toilets bubble, especially when you use a sink or tub in the same bathroom, it's the whole house. If just the one bubbles, it's just that bathroom, but you may have to pull the toilet to clear the line.

Answer 5

Hi If Its Like A Foghorn Noise It Could Be The Following,

Air In The Pipes

To Resolve This Bleed All The Radiators

Water Pressure To High

To Resolve This Is You Have A Pipe Going Into The Bottom Of The Cistern There Should Be A Screw On That To Adjust How Fast The Water Goes In To The Cistern Or If You Don't Have A Pipe Leading Into The Bottom Of The Cistern Lift Off The Cistern Lid And Were The Ballcock Starts There Should Be A Screw Turn that And Then This Will Adjust The Fill Level And How Fast It Flows In.

If You Have 2 Toilets You May Have A Leak between Them You Need A Plumber To Check That bit out!.

Hope This Helps,

Jack.

Answer 6

A bubbling toilet in a downstairs condo could be caused by a clog in the Plumbing vent stack, a partially blocked sewer line, or a malfunction in the plumbing system that is affecting the air pressure, resulting in the bubbling phenomenon. It is recommended to have a plumber inspect the system to identify and address the underlying issue.