Sewage backup in basement Open hole in sewer line Toilet gurgles!
The previous owner drilled down 2ft or so into the cement floor and tapped into the sewer line in my basement. No hookups or connections were made...just a big hole so that they could install a laundry basin tub and for the washer to drain. The hole has started backing up and with it raw sewage. The toilet that is upstream in the line has started to gurgle and when I turn on a faucet upstream, there are 2 one in downstairs bathroom and kitchen sink right above on the main level, there is a rush of air or blowback at first b4 the water will flow. Can all of this be caused by a blocked vent?
The 3 fixtures that have blowback or gurgling are connected the toilet that gurgles is 15ft upstream of my "hole". I have also had my main line snaked twice in the last year and last one was a week ago. I also had my washer rerouted to tap into the smaller cast iron stack 15 ft upstream of the hole and it is trapped and I believe vented(have to check to see if blocked). The temporary fixes just aren't working anymore and I can't afford to spend the 4k to dig up and replace my line to the street especially if it could be something else.
There is a vent directly above the smaller stack where these fixtures come together which i will check right now but I still want to fill/fix/cap the hole that is backing up it is nothing but a pita and a constant source of bacteria and raw sewage. I have the original cleanout that is accessible and usable 15ft further upstream from my "hole" and have had to take a plunger to it to stop the rising water/sewage.