One side of double sink backing up
#1
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One side of double sink backing up
In the pic there is silver piping running to the disposer on the left side sink. The white piping runs up to a sink that has a dish dryer in it. When I run water down the left hand sink the right hand sink piping will back up and gurgle. I removed the white piping down to the elbow that fits into the main line and ran a 20' auger down it. Still, when I run water in the left sink, the right one backs up. Any ideas on what might be going on?
Thanks!
Thanks!

#2
Still, when I run water in the left sink, the right one backs up.
If the pipe runs horizontal to the floor to a main stack..... the problem would probably be right at the stack.
#3
Not part of the clogging problem, but those s-traps don't meet today's code. Sounds like you need to do more augering.