ok, before I go and spend tons of money on parts that i might not need... thought I'd ask some experts!!!

My car doesn't start very well. After turning over for a good few minutes (probably less, just seems like forever), it starts to pop-off. then runs rough between 200 and 500 rpm. Then after is runs for a while I'm able to give it some gas without it cutting out, and then runs great. Problem only happens after is sits from more then 3 hours.

Any info would be great befor I go out and but fuel pumps and sensors and replace half the car.

Scott