Why does dishwasher only drain when unhooked from sink?
Just bought a new place. Wife did load of dishes in dishwasher and then noticed about one inch of water had not drained. I did some research and assumed there was a Clog someplace so I took the thing apart and found nothing. I called a handy man who told me to unhook the dishwasher tubing from under the sink and try to drain dishwasher. Drains without hesitation. However when I plug back on its the same problem. Sink does not back up when running. Tubing under sink has the rise and fall before connection.
Is this a good question?