Push the dishwasher to the left or right if possible, or pull the dishwasher forward to level it on a flat surface.
Place the level on top of the dishwasher to determine if the dishwasher is sitting on the floor evenly. If the floor is level but the dishwasher's legs are uneven, turn the legs clockwise or counterclockwise with a 10-inch adjustable wrench to level the dishwasher.
Check the main wash compartment inside the dishwasher. Too much detergent results in the creation of excess suds during the wash cycle, and increases the likelihood of spillage.
Open the dishwasher's door. Turn the knob near the "Rinse Aid" label clockwise to the "Lock" position. The rinse aid leaks from the detergent port when the cap on the port is not securely tightened.