Dishwasher not cleaning dishes - Dishwashers

DISHWASHER NOT CLEANING WELL??
Here are 5 common reasons why not.
Here are Improper Water Temperature
I can tell you from personal experience that water temperature has a direct impact on how well your family's dishwasher operates. If the water entering your dishwasher is not hot enough, your dishes are likely to come out coated with grease and dish detergent residue. As such, you will want to make sure that the temperature of the water inside your dishwasher is somewhere between the range of 120 degrees Fahrenheit and 140 degrees Fahrenheit. If it's not it could be a faulty heating element.
Dirty Pump
Based on my experience, a dirty dishwasher pump will also cause your dishwasher to produce less than stellar results. Therefore, you may want to consider cleaning your dishwasher's pump every six months. In many instances, it is an easy task to complete. In order to clean your dishwasher's pump, you'll most likely have to remove the dishwasher's spray arms. Once the spray arms are removed, you'll want to clean and inspect the pump's impellers, blades and pump guard. I should also mention that there are appliance companies that sell dishwasher pump repair kits should you notice that a part needs to be replaced. A basic dishwasher pump repair kit will tend to cost you $20 to $60 depending on your dishwasher's unique needs.
Dirty Spray Arm
Dirty spray arms may also be to blame. After all, if the spray arms' holes are clogged, the hot water won't be able to reach the dishes properly. A dishwasher's spray arms are very simple to clean. In order to clean them, you will need an old toothbrush and a bread twist tie that has been stripped of its paper. Use the toothbrush's bristles and the wire from the bread twist tie to unclog all the holes.
Broken Dish Detergent Dispenser
A broken dish detergent dispenser is another likely culprit when it comes to dish cleanliness problems. Sometimes the dish detergent dispenser's door will not open or shut properly, which prevents the dishes from getting nice and soapy. The good news is that most dish detergent dispenser problems may be solved relatively inexpensively. The cost of a replacement dish detergent dispenser will vary based on the make and model of your dishwasher. There are also instructional videos online that will help you with the installation of your dishwasher's new detergent dispenser.
Dirty Filter
A filter has an impact on a dishwasher's effectiveness as well. Hence, you will want to inspect your dishwasher's filter for obstructions. The location and type of filter will vary based on your dishwasher's make and model. I would recommend that you check out your dishwasher's operator's manual. It should contain instructions on how to clean your particular unit's filter as well as where you can order a replacement part if need be.