I have a Kitchen aid tall tub dishwasher model #KUDCO3IVWH Yesterday the top rack didn't clean, today both racks stayed dirty - took apart the food chopper assemble and notice that there is water in the well is it ok to remove the food chopper blade? what else could be wrong

it would be improbable that you put too tall an item on the top rack every time you wash, but it is also impossible to check without a see thru tub. Just make sure there are no tall items and maybe lower the top rack.
Some dishwashers have the top arm on the bottom of the rack and use a connection in the back when the rack is pushed in. If yours does make sure it isn't deformed and not making properly.

This is caused by the chopper screen being pluged up you have to take the sump apart and clean the chopper.

had a simular problem, used product called dishwasher magic to clean it well and that took care of it. I got it @ walmart in the diswasher detergent area. Also be sure you are loading according to the manual. I now use lemi shine in every load for spot free clean dishes and put the dishwasher magic in it about every few months to keep it from getting build up. If you have a manual they have directions to take them apart for cleaning and I have had to that before to. Just remember how to get it back together. That's all I have but I'm not a repair person I'm a nurse.

Hi,

On your model, upper rack cleaning issues are most often linked to debris in the inlet to the pump. I have put some instructions together on cleaning this. If you follow the link it will explain how to check and clean this.

Sump Clean Out

See pictures of how to fix this at:
http://forum.appliancepartspros.com/dishwasher-repair/8174-kitchen-aid-dishwasher-wont-clean-top-rack-items.html#post129837

replace the top spray arm and it should work ok again

Sounds like you have 1 of 2 problems. Either your pump is clogged or you need a bigger drain loop.

sounds like a broken chopper

You'll need to clean the food chopper in the base. Make sure you've got a torx screwdriver.

http://forum.appliancepartspros.com/dishwasher-repair/8174-kitchen-aid-dishwasher-wont-clean-top-rack-items.html

I removed the tracks from inside the dishwasher.  Then I was able to carefully remove the endcaps (something I had not been able to do previously) carefully.  The existing broken wheels slid out and I slid two new brackets into each track.   If I attached the tracks to the rack first, I would not be able to clip them into place, so I first replaced the endcaps and then returned the tracks to their positions inside the dishwasher. Reattaching the upper rack is not difficult, but takes two people while I connected the left side, my assistant supported the rack on the right side.  I then connected the right side of the rack.  I slide the rack back and forth to macke sure that is worked smoothly.  We then loaded the dishwasher and washed our dishes as we had in the past.