Your sprayer arms may be clogged.
The upper arm attaches to a tube in the back of the dishwasher. If the support clamps come loose, the upper spray tube will not be flush with the tube and can't carry water to the sprayer arms. Also the sprayer arms can become clogged with paper remnants, bone fragments, or pieces of peeling. You'll need to remove the sprayer arm and flush it at your sink. If there is a jet that is clogged, tweezers will help remove the residue.
Also, dishwasher detergents need HOT water, so be certain the water is at 140 degrees. Make sure your detergent is fresh!
Finally, the bottom of the door INSIDE the washer often get covered with gunk. Be sure and gently wash the bottom of the door INSIDE. You can open the door, spray some window cleaner on the bottom and then gently brush away the 'gunk.' Rinse with hot water from a pitcher or your sink sprayer and this can eliminate some of the residue that is showing on your dishes.
I hope this helps. If it does, please come back to Fixya and rate my answer
Hey, I fixed the same type of problem. Sort of a nonstandard approach, but it worked, and I did not need a repair man or any parts. Here is what I did at the advice of a friend who is also a handy man: I ran a few cycles with no dishes with CLR and Lime Away in the detergent and rinse aid compartments. Then I did one with Drano in the detergent compartment. Then I ran a couple cycles with just water to rinse it all out, and NOW IT WORKS! The top sprayer arm spins again, not all the time, but apparently when it is supposed to. And more importantly, the dishes are clean again! I noticed there had been some whitish grayish deposits on the heating element, and those are now gone. I think because of the Lime Away and CLR. After the Drano cycle, I noticed there were food particles that had splashed into the sink since my dishwasher drains into the disposal, as I am guessing most modern homes in the US do now. Anyway, before you buy any parts or call a repair man, I would give chemicals a shot!
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