Yesterday all of a sudden our kitchen sink was clogged. Wife use the plunger and seemed to fix it. A short while later I hear a weird dripping in the basement. The sink from the wet bar had overflowed everywhere. Anyway, that’s cleaned up, but.. I have since discover that any water draining from the kitchen sink is flowing back up from the wet bar sink drain and causing it to fill up. This is new as of yesterday. The wet bar sink eventually slowly drains on its own, but plunging and pouring boiling water has done nothing. It is also the only fixture in the house that is doing this. I am guessing this problem is downstream of both sinks which is why the wet bar sink is filling up with water from the main floor sink and also slow to drain. I attempted to snake it, but I think the snake is just going the wrong way probably heading up instead of to where the blockage might be.
I noticed the pipe on the wet bar sink was sloping down towards the p-trap, which I adjusted.
The wet bar was roughed in when we bought the house, so I assume it is all properly done. I only installed the sink to the drain there. And it has been fine for the last 13 years or so.
So, would this be a clog or should I be looking at something else?
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