i was having problems with my 250 sputtering (like it wasn't getting enough fuel) while accelerating. i had a new pcv in the glovebox and i replaced it. drove from NC to FL and back with no problems - then it started again. it's been a constant problem and then it had its 'days' when it wouldn't crank. left it alone came back and it would start. now it won't start at all . . . any help?

thanks!
shane