Last week my ancient dishwasher was making a funny noise. I opened it up and looked in to see that one of the main sprayer arms looked a little bent. I reached down to touch it and it crumbled away from the dishwasher in my hand. As I sat there holding an integral piece of the machine in my hands I felt a little sick. Although there probably wasn't a way to prevent the death of my dishwasher, there are some common dishwasher mistakes that could cost the life of your.