Bosch dishwasher - bottom spray arm not rotating?

Me too. We've stuck soda crystals through the system a few times, and washed out everything. The pump is ok, as pressure to the other outlets is still fine.

I'm trying to get a mental picture of how the pump feeds the spray arm. Water poured into the vertical tube that supplies the bottom spray arm drains away very quickly into the area below the grille. That makes me think the tube is not sealed. If it is not sealed, how can the pump maintain pressure? Maybe some debris has locked a valve open?

Thanks very much.

kidari
December 2007