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Drain with Air lock?

15290 Views 3 Replies 3 Participants Last post by  srloren
I have a bathroom drain that drains slow in my upstairs bathroom. It just started for no apparent reason. My first thought was there was a clog. There was debri in the trap and I cleaned that out, I also had debri in the outgoing pipe from the trap to the wall, so I cleaned that. However, it still won't drain which is why I thought it might be an air lock. When I put the plumbing back together the water runs fine as it is suppose to, but if I close the drain to the sink and allow it to fill and release the drain I get a couple of bubbles and then the sink doesn't drain. I can repeat the process of removing the trap and reinstalling it and get the same result. There is an approximately 1 inch diameter pipe that appears to be coming from my AC unit that "T"s into the sink drain tail before the trap. When I blow on the vent tube up in the attic at the AC I hear water in the A/C, but there is no way to blow air through the pipe in the direction of the sink without cutting the pipe. But before I do that, I was hoping someone can give me guidance on my situation. No repairs have been done to plumbing in the last two years. Thanks in advance
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Clean the trip lever assembly inside the sink tailpiece. To do this you'll need to disconnect the linkage and remove the lever rod from the stopper.
Or buy one of these for a couple bucks. I use one at least oce a year--
You can get them at Wallmart or most hardware stores
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