re: I have a plumbing question for yall

If you push your plunger down and you can't pull it back up that means your clog is before the vent in that pipe or your vent is clogged and your have another clog past the vent. You should have a branch vent right at the drain going into the wall. When your pipe goes into the wall it hits a T, wet goes down vent goes up. Flushing your main vent isn't going to get that.

The horizontal portion of your branch vent should be several inches above the top of your sink (Can't remember the number off the top of my head). If your branch vent is below the top of your sink your branch vent can clog and you essentially have an unvented drain.

I'd pull the pipes out and see if you can get your auger turned up into the branch vent and see if you can find a clog in the vent.