2012 Winnebago Journey. My kitchen sink is clogged. I disconnected the trap and it was clear. I put in a bottle of liquid draino and nothing. I then roto rootered it with a plumbing snake. I got i...
Just a quick thought here.. Is your sink on a slide out? IF so, you might check for a kink in the drain hose. The drain must be flexible so it can move with the slide. One of my friends had this problem on his coach and he found a kink in the drain hose.