Desmond
New Member
I think I caused this by flushing coffee grounds down the sink (now I know). I had tried to plunger it and I ended up breaking the seals on the plumbing under the sink. I've since sealed it and have ran drain cleaner through and just today snaked it but no change. Curious thing is that today I easily got 20ft of snake in there yet it backs up quickly, almost too quickly and I had a thought. When I resealed the pipes under the sink I noticed a section that was just fitted in loosely and not sealed and I assumed it was just a bad amateur plumbing job. Now I wonder if that was a natural vent and when I sealed everything, now air can't escape. There is an unused vent piece under the sink left from the previous owner. Picture attached.