Dishwasher seems to run for a very long time on normal cycle. It leaves a whitish residue on dishes and the glasses appear cloudy. I do use a rinse agent.

I found this on ehow I believe it will help. How to Troubleshoot Dishwasher Residue By Dale Yalanovsky eHow Contributor

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Dishwater residue is a fairly common occurrence, and several things can cause it. Even the newest dishwashers may leave residue, and it might have nothing to do with the actual dishwasher function itself. However, there are things you can do to prevent, limit or completely remove dishwasher residue during every washing cycle.

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1. Detergent Residue
   • Modern phosphate-free detergents are the main culprits when it comes to detergent residue. After every wash, many leave a slight whitish residue behind. After several washings, the residue becomes caked on and leaves a noticeable white tint to your dishes. Some dishwasher detergent brands are better than others, and either minimize residue or do not leave any. Once residue is present, however, the only way to remove it is by hand scrubbing or scraping.
   Hard-Water Residue
   • Hard-water residue comes from non-softened water from your hot water tank. Non-softened water leaves a white tint on dishes, but no amount of scrubbing will remove it. Only by wiping a small patch of the dish with vinegar or lemon juice will you be able to ascertain whether the white residue left is hard water or detergent. The slight acidic action of the vinegar or lemon juice removes hard-water stains, but they have no effect on detergent residue.
   Greasy Residue
   • If the dishes feel greasy when they come out of the dishwasher freshly washed, you are dealing with a greasy residue. There are two main reasons for this: either the detergent is not an effective grease remover, or the hot water inside of the dishwasher, either from the hot water tank or the dishwasher's heating elements, is not hot enough. Boosting the hot water temperature on the water tank may solve the problem, and a second wash cycle may be needed for the dishes. A preventive measure of running the dishwasher empty with a full load of detergent also removes the residue inside of the dishwasher.
   Streaking and Spotting Residue
   • If you have spotting or streaking on your dishes, that may be a sign you need a rinse agent. Many modern dishwashers recommend a rinse agent to prevent spotting or streaking, and without one, your dishes will never be crystal clear or streak-free. The next time you do a dishwasher load, add a rinse agent. If the dishes come out spot- and streak-free, the problem is solved.

Read more : http://www.ehow.com/info_12285021_troubleshoot-dishwasher-residue.html

The problem is most likely that there is still water residue at the bottom of your machine. If the machine is not fully drained it picks up some of the residue and sprays that onto the dishes during the final rinse, leaving an unhealthy and unsightly film on everything.
Remove the bottom strainers plates and make sure that the outlet pipe is not kinked, that there is nothing obstructing the pipe or the pump or selector valve. If possible back flush through the outlet pipe and try draining the machine once more before using it again. Good luck and please rate this solution.

Hi,

The scum, film and white residue problems have started since the reduction of phosphates in dishwasher detergents.

Here is a tip that will help you to solve the problem of films, residue, and scum in your dishwasher.

Dishwasher Residue and Film on Dishes

heatman101

The problem is hard water leaving those spots. www.dishwasherfilter.com has a product to solve this problem once and for all. It filters the water going into your dishwasher and removes the hard minerals that leave those spots. It is very affordable and even has a money back guarantee. You will love the way your dishes look with this product.

modern day dishwasher use less water than the older ones so you have to use less soap a lot less only 2 tablespoons but you also have to use rinse aid with the very little soap the cloudy residue on the dishes is left over soap

You may have hard water. Are you using a rinse aid, you always need to use one. Buy some Tang drink crystals and empty a package into the soap dispenser and run the dishwasher through empty. If you can't buy Tang use about 4-6 cups of white vinegar thrown in the bottom of the machine and run the cycle. Sometimes the white residue on the glasses is there permanently and can't be removed it is called "etching" right in the glass.

hello. this will help a great deal.

First of all empty out your dishwasher, toss in two cups of plain white or cider vinegar and run it on the highest and longest cycle.

Always run the hot water in the sink first and start the dishwasher only when the water is as hot as it will get.

This wash will clean out your dishwasher thoroughly.

Then always do your dishes after you have rinsed any residue off of them before placing them in the dishwasher and I always recommend the pot scrubber cycle if you have one.

The problem sounds like a hard water situation....Do you have hard water?...does your coffee pot take a long time to make coffee (an older coffee pot) if so you may consider a small water softener attached to the water inlet line or a water filtration device...as hard water will do just that..leave spots on the glasses and silverware as well as colored dishes, that look like little circles of whitish dried chemical or powder stains. Yes you can run a full bottle of vinegar in your dishwasher but monitor the cycle closely so it does not go into the drain cycle right away...and let it run through an extended wash cycle 2-3 times....before it drains so as to be able to maximize the effect...and as the aforementioned suggestion states you can also run some CLR through the system...BUT be CERTAIN to run it through several wash and rinse cycles after doing so as the chemicals in CLR are not healthy...and do not leave any dishes in as you do so (whereas vinegar is just Acetic acid and organically based). Also it is impossible for any concrete to have gotten into the dishwasher from anything poured down the kitchen sink drain since there is a valve in the drain pump called a "backflow preventer" that prohibits anything from entering the dishwasher. Also you may want to take out all the trays and remove the screem in the bottom of the dishwasher that covers the engine and pump assembly where the sprayer arm sits atop of. After doing so ( three -6 screws) clean anyfood or residue found ther out with a shop vac or something and reassemble.
I hope this helps....if so please let me know by rating me ...thank you....The Fang

they must have changed the way they treat the water in your area. those spots are caused by hard water. www.dishwasherfilter.com has a product out for this problem. it filters the water going into your dishwasher leaving them spot free and crystal clear with every load. you will love the way your dishes look.