Hi,
I have a washing machine and a sink in the garage; the washing machine drains into what I think is called a spigot on the drain pipe from the sink then the pipe goes through the garage wall into the downstairs toilet. The toilet outflow has a special sort of adapter behind the u-bend with a sealed hole in the top into which the pipe from the garage goes.
This has worked OK since we moved in but suddenly now when the washing machine is emptying, air bubbles seem to be gurgling up in the toilet and, more importantly, the water level in the toilet seems to end up very low. In fact it seems to be lower than the bottom of the pipe beyond the u-bend going into the adapter.
I thought the u-bend was supposed to keep the water level in the toilet at the correct level; I am puzzled as to how it can end up lower than this.
Both the washing machine and the toilet seem to be emptying OK, but with this gurgling and very low water level. Has anybody any ideas.
Thanks, Lawrie