OK, so I'm not a professional plumber but I've replaced many wax rings before. Toilet worked perfectly fine before until I noticed a little leak at bottom of toilet. I replaced the worn out wax ring. There are no more leaks but this time the water overflows and just won't have that swirling flush! Very slooow drain. There;s no blockage, no leaks and eb=ven replaced the wax ring a second time, just in case. I'm stumped! Just can't figure it out. Plunging, snaking and chemicals won't flush the toilet. Any ideas?
Recheck the passage way that runs from the bowl to the horn. There must be an object lodge in there since the toilet flushed properly prior to the wax ring being replaced. Don't remove the toilet from the closet flange just yet. Insert a toilet auger and work the handle. It should advance through the toilet with little effort as it is being turned. If you encounter resistance reverse the auger while withdrawing it a short distance at the same time. Than continue pushing it forward feeling for any blockage. Withdraw the auger and flush to verify proper operation. If, after using the auger and flushing, the water doesn't flush pull the toilet, drain any standing water in the tank and bowl and lay it on its side on a plastic sheet. Examine the horn opening with a flashlight. If necessary insert a bent coat hanger into the opening and probe for foreign objects.
I've had this issue before. I used an OFF BRAND (Made in China) heavy duty extended wax ring from a hole in the wall, mom & pop hardware store/gas station. It had a thin layer of rubbery plastic through the interior of the plastic extension. That plastic came free at the bottom and sealed itself after 3 uses.
We tried an auger and a snake neither could bust it. One swift yank was all it took once the toilet was off.