If your toilet fills when you run your sink, you probably have a clog in either the toilet or the sink. Unless your sink or toilet is backing up septic or sewage water, you can try removing the clog yourself by using a plunger. Never use a chemical drain clearer, such as Drano or Liquid Plumbr, in a toilet. If the water is dirty or foul-smelling, do not attempt to fix the clog yourself. Instead, contact a plumber as soon as possible.
Things You'll Need
- Old washcloth
- Bell-shaped plunger
- Rubber plunger
Wet an old washcloth and place it over the sink drain.
Make sure there is enough water in your toilet to cover at least a few inches of a bell-shaped plunger. Position the plunger over the toilet drain, press down to ensure a good seal, and then pump the plunger vigorously 15 to 20 times.
Remove the plunger. If the water swirls down the drain, you are done. If not, repeat plunging until the drain is clear.
Remove the washcloth and set it aside.
Position the rubber plunger over the sink drain and press down to ensure a good seal. If you have trouble getting a good seal, fill the sink with a few inches of water and then place the plunger over the drain.
Pump the plunger vigorously 15 to 20 times.
Turn on the taps and flush the sink’s pipes with water for several minutes.
Tips & Warnings
- A snake, or hand auger, can be used to remove a large or particularly stubborn clog. Use a 20-foot-long snake in a three-eighths-inch diameter to snake down the toilet and sink drains to remove any obstructions.
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