We have had flooding under the kitchen sink a few times caused by the dishwasher drain hose clogging up. My first theory was that the clog was coming from the dishwasher (food remains on plates etc). But that is not proving out. The line goes from the dishwasher to a vent and from the vent to the garburetor. The line from the dishwasher to the vent is clear. The line from the vent to the garburetor is clogged. So it looks as if the garburetor is discharging food particles into the line. Any ideas on how to prevent this?