If you have problems with gurgling sinks, it is likely because of trapped air in the pipes. The gurgling can be caused by improper installation, blockages along the pipe path, lack of a P-trap, or improper ventilation.
You don't need a plumber to fix this problem. In most cases, you just need ot make adjustments to the plumbing. Here are tips to fix sink gurgling.
Prepare to Work
For this project, you need:
- channel lock pliers
- plumbing snake
- enzyme-based cleaner
You may be able to fix sink gurgling by plunging the toilet. Sometimes, toilets and sinks share a plumbing vent. Plunge the sink, and then plunge the toilet closest to the sink.
The shower drain could also be clogged. Pour some enzyme cleaner down the drain. Enzyme cleaners take longer to work, but they are safer than caustic substances, and they won't damage pipes.
Inspect the P-trap
If plunging didn't help, check the P-trap. The P-trap is a half-oval shaped device that prevents sewer gas from entering the room. Gurgling sounds could be because of air trapped inside the pipes pulling nd pushing water in the P-trap.
Set a bucket under the trap opening, use the pliers to detach the lock nut .Check the P-trap for dirt or blockages, and remove it with a rag.
Insert a snake down the pipe that attaches to the P-trap. Push the snake as far as it will go. If the snake it's a blockage, pull it up slowly. Reattach the P-trap, and try the sink again.
Check the Vents
If the gurgling only occurs at the sink, the vent may not be installed the proper distance from the trap. A vent pipe should be three-and-one-half feet within the P-trap, if the drain pipe is one-and-half inch. Otherwise, it causes a vacuum.
The main roofing vent could be blocked as well. Attempt to clear the vents with the snake, or spray water through them.
You will need to climb the roof to clear the main vent. Attach garden hose to s spigot. Set an extension ladder on flat ground, and secure it to the fascia or top siding, and the bottom siding. Turn the nozzle on high, and carry the hose, screwdriver, and snake with you.
Use a screwdriver to remove the vent cover. Spray the water in the opening. Insert the snake to check for obstructions.
If possible, get an assistant to try the sink for you,, so you won't have to climb so much. Reinstall the vent cover. Contact a plumber, like Tru-Flo Plumbing Inc., for more help.