1994 Chrysler New Yorker

3.5 engine 185K miles. Just had new platinum plugs placed in the vehicle. In the morning only, the car cranks and seems to flood out. I have to take the fuse out and crank it again. After putting in the fuse, I try to start it again, it pops, sputters, and sometimes after holding my foot to the floor will start and act as thought it loaded up. After that iniatially clears it runs well. No other starting problems during the day (after work to come home or any other successive starting) The problem starts again the next morning