I know this question is similar to some which have already been asked but unlike other toilets who don't flush properly, or completely mine doesn't flush. When I pull the lever to flush the toilet the water comes up almost to the rim then over the next ten min. the water will go down a little bit but nothing actually gets flushed.
I have used a plunger and an auger and nothing. I usually have this problem about 2-3 times a year. I've called the plumber who brings his snake and finds nothing but for some reason it works fine after he leaves. I've replaced the flap and it worked for a few weeks and then it happens again.
Any thoughts before I call the plumber once again?