My whisper quiet dishwasher is not cleaning the top rack dishes

Check the screen area around the sump right below the lower spray arm if it is built up with lime deposit then the wash pump is starving for water and cannot pump water to the upper spray arm this would also starve water to the drain pump.

Make sure the center loading is not obstructing the water jet to the top shelf. Top shelf is only for glasses and saucers , use Jet-Dry .Pre rinse and clean bottom pan strainer from dirt debris.

Check whether the top rack spray arm main hose sits firmly into the
machine. If there is a leak in this area water pressure may not develop.
Also check the water pump in the machine!

the sprayer is clogged with ****. I had the exact same problem. my mother-in-law gave me of some 80 year old man that has fixed appliances all his life. Ten minuets after he got to the house it was fixed. cost $70.00. He just took a couple things apart dumped out the **** inside the parts and put it back together. Hope this helps.

Possible that the motor impeller has good particles in it, causing poor water pressure, which would be most evident on the top rack. You would have to remove the spray arm, then the filter, then the torx screws to get at impeller....unfortunately, that model of dishwasher isn't the greatest in the first place for washing, since it only has the one spray arm.

Hey- Two things could be wrong.- clog, or bad motor. Sump screen needs to be cleaned of debris. Removal of sump cover to access screen requires torx bits and some patience. Replacement of pump requires pulling out dishwasher to access bottom. Motors fail when seal between motor and pump fails. Will still operate, but become weaker over time. Parts available- motor about 100$ at appliance parts pros.appliancepartspros. Hopes this helps- Thanks- ED

In my experience, you probably have a clog in the spray arm/arms for the top rack. Take the arm(s) out and see if the holes in them are clogged. Rice, plastic wrappers, and glass from dishes that broke in there are the most common culprits I've seen.

Kenmore 665
My dishes on the top rack are no longer getting clean. I don't think any water is going to the top. The dishes on the bottom get clean but have a soap residue on them.

check to make sure your lower spray arm openings are not blocked.

not a dumb question,
is the bottom dishes coming out clean? there is a chopper that breaks and will trap food and not clean the top rack.it is not easy to replace.but not impossible.