My Whirlpool Quiet Wash Plus dishwasher (about 7 yrs old) starts to dispel water and suds out the front after running a few minutes. Seems to be coming out more on the ends.
What could be causing this?

Check float to insure that it is free to move, sounds like dishwasher is over filling. That is assuming you have not changed the type or amount of detergent being used.

The drain inside the machine could be plugged also. It is usually on the bottom inside the dishwasher in the back.