hi, new to all this so please be patient with me, my mk2 1990 golf gti digifant was running ok all be a bit gutless, (not been on road for 6+months) took it for a 2nd test drive and on way back about a mile from home, it coughed and popped and not wont idle, will start and rev to a max 1500 before dies again. this is my first gti and dont really want the wife to be right by saying should never had brought it. help please