I am posting this question for my sister. She has a long time problem with the toilets in her house. The toilets constantly get stopped up. Since she has four kids, we sort of blamed the problem on them either flushing what ought not be flushed or using too much toilet paper or not eating enough roughage. Her kids all now know how to use a plunger. It was bad enough that I thinkmy sister had a plumber replace one of the toilets (one of the low profile $600 kohler jobs) with a better flushing toilet. Nothing works. This is an older house that has been remodeled and then had a second floor added on as well.
Anyhow, the kids are older and I do not think they flush toys down the toilet anymore (if they ever did…).
The latest toilet episode starts off with the toilet in the basement plugging up. We plunged the heck out of it and eventually, it was unstopped. (This toilet is at one end of the house.)
Later the same day, the toilet in one of the new upstairs bathrooms (at the other end of the house) is stopped up. Thank god there is nothing but water in this toilet. The water level is up to the rim. No amount of plunging will unstop thgis toilet. Eventually, the level of the water in the bowl goes down. So I flush the toilet to see if it magically cured itself. Nope. We flush some magic toilet paper cellulose disolving enzyme and let the toilet sit for a while. This time I watch the toilet for a long while and I see the level dropping and it continues to drop until the water level goes to the level of the trap and then gurgles for a few seconds and then the water in the bowl fills to a normal level. This is repeated several times.
There are two bathrooms upstairs. They are back to back. The toilet that is in the second bathroom works just fine. For now…
So, my sister leaves town for the weekend and when she returns, the second toilet that was working is now doing the same thing. Toilet fills up to the rim and the water level drops to below the level of the trap, gurgles a bit and then fills to a normal level. It takes about 45 seconds for this to occur.
My sister has called the plumber to help unstop the same toilet before. He removed the toilet and snaked the drain and he claimed that there was nothing to be found. The toilet did work afterwards.
The sinks and shower drains in the two upstairs bathrooms seem to work fine. There are no Air Admitance Valves to be seen, so I thought all the vents went through the roof. However, I do not see any vent pipes directly over the two bathrooms. I guess the venting is tied into another vent pipe.
Based on the wierd behavior of the water in the toilet, can anyone please shed some light on the cause of the problem.
Flushless In St. Louis