went out at 7 as usual this morn to get the my 38k mile 55 plate gti out of the garage, when i started it up it seemed to be running on 3 cylinders and missing badly for about 30 seconds then ran fine, i drove round the corner to the paper shop turned it off then went in the shop came back out and started as normal. any body had this problem??, could it be the coil pack on the way out??