Dishwasher Not Cleaning Dishes? Here’s What to Check First

If your dishwasher is running but dishes still come out dirty, cloudy, greasy, or covered in food particles, the problem is often caused by clogged spray arms, a worn wash pump, dirty filter, bad water inlet valve, or poor water circulation. This repair help page explains the most common causes and helps you find the right replacement part fast.

Shop Dishwasher Cleaning Parts

Common Symptoms

Dishes come out dirty after a full cycle
Food particles remain on plates and glasses
Cloudy or greasy residue on dishes
Top rack or bottom rack not cleaning well
Dishwasher runs normally but wash performance is weak

Most Common Causes

Clogged spray arms – blocked spray holes can reduce water pressure and cleaning power.
Dirty or blocked filter – food buildup can prevent proper water circulation.
Bad wash pump or circulation pump – weak pump action can leave dishes dirty.
Faulty water inlet valve – low water fill can reduce washing performance.
Improper loading or detergent issue – can also affect cleaning results.

Most Common Fix: Clean or Replace the Spray Arms

If your dishwasher is not cleaning dishes well, the spray arms are often the first thing to inspect. Food debris and mineral buildup can clog the spray holes and prevent water from reaching your dishes properly.

Find Your Spray Arm

Quick Things to Check Before Replacing Parts

Clean the spray arms and make sure holes are open
Remove and clean the dishwasher filter
Make sure dishes are not blocking spray arm movement
Check for proper water fill during the cycle
Use the correct detergent and hot water setting

Why Buy From PartsDiscount.com?

Free Shipping from our U.S. warehouse
No Restocking Fees
Fast same-day shipping on many orders
Easy model number search to find the right part

Use code DISCOUNT at checkout for extra savings.