When dishwasher cycles to pump water out, there is a burst of water to sink, a slow flow and then nothing. Water remains in the dishwasher. Disconnected and clean hoses and cleaned the inside housing/drain for any rubbish that may block water flow. When hose is disconnected from sink and placed close to the floor level, all the water is pumped out. Does this mean the pump is shot and does not have enough juice to push water upward into sink? Is it worth the effort to repair. Thank you. Leo