* The drain pipe from your sink to the sewer has a vent pipe that usually goes through your roof.
* When you dump water into you sink, the water goes down the drain and through a
J-Trap then to the drain pipe. When the water fills the sewer pipe, the vent prevents a suction which will suck the water out of the trap.
* It’s the water in the trap that prevents fumes from comming back out of the sink.
* Find the vent for your sink then run a snake to see if it’s clogged, then unclog it.
* If all else fails, a plumber can do a smoke test. He’ll force smoke into the sewer pipe that then goes out the vent. It’ll look like a chimmney smoking.
* Good luck… Adios… Jasper
Jasper Castillo
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