long crank when starting after sitting

What is your question?

After the van sits it takes a few times of turning the key on and off and pumping the pedal to get it started. I do hear the pump working and there is some p codes thay are P0446(Evap Emissions system vent control circuit) P0453 and P0452(Evap Emissions system pressure sensor switch high imput/low imput. do these have anything to do with my problem. I though it was the fuel pump but I don't want to spend all that money and it not fix it any sugestions.