This has been an ongoing problem for months now. We have had the Roto Rooter servicemen come to our house and run the tubing through the septic line (we are on a sewer line). The commode acts as if it is going to run over, but when we plunge it, it will make a gurgling sound and within a few minutes the water will reside, but will not flush. Im wondering if this has something to do with the seal. We have actually taken the commode of the floor and taken it outside to run water through it, nothing. What is the problem.