broke down need help asap please?

got a 1989 mk2 fiesta fiesta xr2 and done some motorway miles for a little while and stopped for a couple hours. (first time on the motorway since i had the car) and when i started it up again it was jumpy and needed to be in really high revs to get anywhere or it would just cut out. think the carbs are flooded and it was bumping but just cut out at the end of the road due too lack of rpm any suggestions? could it just need to be opened up for a while on a large car park??