That's a venting issue.
The quickest fix would be to add an AAV to your trap arm.
I've got a kitchen sink that I believe isn't venting correctly and my current plan is to install a separate vent line for the kitchen sink to fix it. I'm hoping someone can confirm my diagnosis before I go and have someone mess with the plumbing. Here's a few facts about the apartment/house:
- Apartment is the first floor of a duplex house, with the unit above having a kitchen right above ours.
- The issue does not correlate with use of our sink (it can happen right after I use the sink, or hours after it has been used)
- The issue does seem to lightly correlate with when the folks upstairs use their sink.
- Looking at the pipes it seems that the sink just vents up the stack to the kitchen on the second floor and doesn't have a separate line.
Here's a video of the sink making the noise:
Last edited by Terry; 08-07-2013 at 09:29 AM.
If it drains ok and doesn't smell, I'd probably leave it alone.
[B]No, plumbing ain't rocket science. Unlike rocket science, plumbing requires a license[B]