tank vents 90SP36

[williamcharrison]

This may sound funny but there is a noticeable gurgle from the
kitchen sink drain when I empty the sink. I checked the vent on the
top right center of the coach and ran a plumbing snake down it.
I felt an obstruction and from the dirt on the end of the snake
I surmised it was the remnants of a wasps nest. I continued to feed
the snake down the vent but never did touch water and the gurgle is
still there. Any ideas?

Chuck Harrison
Akron, Ohio
90 SP36