My dishwasher spits water out from the spiket on

it is normal for a little water to come out here. if it is excessive, you have to make sure the drain pipes under the sink are clean and clear. pull out the p-trap and clean it out completely.
also, at least 1 sink should be empty and unplugged to allow proper ventilation when the dishwasher drains. this is easier to try out than the p-trap.
the only other thing you can do is put an extension on the y-shaped pipe under the 'spitter'. this will allow the water to cross from 1 side of the 'y' to the other farther from your sink top. good luck