Faulty soil pipe air admittance valve? Need some help

[Stonedofmoo]

Yes it was exactly as the guys here said, the drain far below was blocked causing an airlock. All fiddling with the air admittance valve was doing was allow the air somewhere to go which meant the water was backing up further.

In my case is turned out the main drainage pipe hadn't been laid properly when the house was built, and it was more like an arch than a pipe causing problems. As the house was still within the 10 year guarantee I had them come back and lay it properly, no issues since.

 

[pedrosniffy]

been a lucky boy today. had the same problem, was about to buy a new aav, seemed obvious but read this post first & it was a blockage. followed the advice, checked for flow to the manhole, nothing coming through. took the aav off, filled the soil pipe from there with a hose (took ages), went out to the manhole & the blockage had been pushed through. no rodding needed...BONUS!! thanks fellas

 

[John D v2.0]

Love this thread, "my poo doesn't go away when i flush, but when I open the window and take a dump with my arse out there it seems to go away fine, do I need a new window?"

No offence to original posters I'm just in a funny mood