I have a 1/2 bathroom with a toilet that will flush but not take the waste water down with any force. It eventually drains drains down to the normal level but it can not handle any solid waste. I have used some roto-rooter in it, an auger, and a plunger to no avail. Do you have any suggestions?
Great info you received from Mr Tieger. I would add that you also ensure the vent piping is absolutely clear from above the roof down into the building waste piping. Especially with the newer low flow loos, proper siphonic action is required for a smooth flush.
It is possible to have an object, like a plastic cap off a bottle, that won't flush down the opening in the toilet. It will allow a snake to pass. If you can't get it to flush, pull the toilet, check for restrictions in the 3 or 4 inch line. Take the toilet out into the yard and put a garden hose up the drain and backflush it. When all else fails, buy a new toilet and break the old toilet and find out what's in it. Good luck.