its funny you say that, there is a metal valve located in line next to the fuel filter,it looks like a fuel pressure regulator,i thought maybe it was the fuel accumulator,i wonder if the technician checked the fuel pressure coming off the pumps directly or from a port under the hood.i will look into the check valve,if its still bogging down after i replace the fuel filter,also,does anyone know where the fuel pump relay is located?thanks guys for all your input.and they say to many chefs ruin the stew,lol!!