A little over a year ago, I installed two Crane Economiser toilets with the power-assist flush. One toilet, in the upper level of our split-level house, has worked fine ever since. The toilet on the main level worked fine for awhile, but then acted up. It would flush, but afterwards the water level would come up to the right height and then immediately drop down to almost nothing. I re-set the toilet on a new wax ring and the problem quit for nearly a year. Then the problem returned, so I tried resetting it again without success. I thought there might be a partial blockage, but found nothing. The shower drain ties in 4' in front of the toilet and it doesn't back up. You can hear the toilet gurgle when you shower, though. Tonight I went into the crawl space under the bathroom to double-check on a blockage. When I opened the clean-out, the water just kept flowing out without stopping -- at least 30 gallons. So then I went to the clean-out at the septic tank, cracked it open, saw it was completely full and gave up. The septic tank was last pumped about 18 months ago. Ideas?
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