Dishes not getting clean in GE Triton XL...

Question

The dishes are not getting clean. The soap dispenser does not empty completely. I don't think the arms are spinning around but water is coming out. After I turn on the dishwasher and let it fill, I opened the d/w but there isn't any water in the bottom. I read the problem may be the water inlet valve, maybe the filter is clogged but I don't know where the valve is. I don't have a service manual.