: : I was using my dishwasher last night and water started coming out of the air vent (located on sink) of my dishwasher. I have a garbage disposer and water was drained into it until day before yesterday. Is this some kind of clogged drain pipe? or is it a broken diswasher?

: What you're calling a vent is an anti-siphon or vacuum breaking device. The water is coming out because the line to the garbage disposal is clogged. This is most likely if the sink drains normally otherwise.

I would check the 7/8" hose from the airgap to the disposal. This is not a "tough" job. Terry