I have a gurgling sound in the bathroom sink when it drains. It is
about 6 feet from the vented stack. This sound does not occur when any
other fixture drains into this stack. I suspect the 2" horizontal is
slightly plugged, but there is never any back-up into the sink. Any
6 ft is too far from the stack.. 18" to 24" is normally specified in code
The water in the horizontal run is causing a siphon on the trap and pulling
the water out of the trap.
Without major repairs, there realy isn't much you can do except clean out
any clog in the horizontal run..
Unless there is a vent connection closer to the trap, 6 feet is
excessive distance, even for 2" pipe.
A small blockage could easily cause self-siphoning because the
trap weir will be above the vent opening.
Snake it out.
HomeOwnersHub.com is a website for homeowners and building and maintenance pros. It is not affiliated with any of the manufacturers or service providers discussed here.
All logos and trade names are the property of their respective owners.