Check the "P-Trap"
My first line of defense for unclogging a stopped-up drain is to check the "p-trap"—the elbow-shaped pipe under the sink. Be sure to put a bucket under the pipe before removing it. Unscrew the connectors securing the pipe to the sink drain and the wall, and check for obstructions. If the p-trap isn’t clogged, there’s probably GUNK inside the drain. Brace yourself!
Unscrew the Pivot Nut
Before you can unclog the drain, you need to remove the stopper. To do that, look in the cabinet under the sink for something that looks like this. Unscrew the pivot nut connected to the drain pipe (the thing in the photo that is connected to the metal strip with holes) and pull the rod out of the pop-up assembly (be careful not to lose any parts).
Remove the Stopper
Once you've unscrewed the pivot nut, you should be able to lift the stopper out of the drain. It will most likely look disgusting, like this. When you finish dry-heaving, it's time to use a "hand snake" to clean out the inside of the pipe. What's a hand snake? Click ahead to find out.
The Hand Snake
Clean the Stopper
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