Missing when driven 6 or 7 miles

[Tony S,Fl.]

Never since 1985 has my car failed me like it has in 2013. Starts normal,
drive 15 minutes or so. Stop at a red light for 30 or 40 seconds. Start up and pop bang pow , no power . Pull the choke and it speeds up but choke has to be out half way to just get out of the way. Limp home and change carburetor take it out same. Change distributer same. Check coil has a nice crisp spark. Changed condenser same effect. Is it a gasoline problem. I will add to this long message. Yesterday it started acting up, pulled over under a big shade tree opened the hood and let it cool down for 15 minutes. Started up same for a half mile then all of a sudden it smoothed out all the way home about 10 miles. Is it 2013 ???? Tony