It's plastic/PVC as far as I can see but I can't see very far.

I went to Home Depot to get a hand operated auger. The fellow said if you're to the cleanout port (I learned a new term!) you likely need something more powerful. I'm in a tactical retreat now.

What's the relationship between the kitchen drain and the cleanout port? The cleanout port is a horizontal 3" pipe that tees into a vertical 3" pipe. It goes down, obviously, but there is a branch that goes up (vent?). The drain fitting under the kitchen sink is about 4" higher than the exterior port. Where do they meet?

Sixto
87 300D