We have a washroom in our basement and today, after six months with no problems, the toilet clogged. I successfully got the gross stuff flush by carefully pouring a few buckets of water through, after which I did a lot of plunging. After several episodes of plunging, buckets of water, and a toilet auger, the toilet will successfully flush on alternate tries. In between the successful flushes a flush will fill the bowl to about 90% and then it will drain to about 40%. Then the next time I flush it flushes successfully and normally.
Occasionally, through this exercise, gurgling noises can be heard from the drain in the adjacent sink.
On one hand I am concerned that there might be a stoppage in the main line but our toilet on the second floor flushes normally and everything else (sinks etc) seems to drain properly. On the other hand, because everything else works properly and the toilet does flush half the time (and apparently normally), I wonder if there is actually a clog.
I would appreciate any information about this. Thanks