Thanks for the replies friends. It is a 32/36 Weber with Auto choke. I played around a little with the idle speed adjustment and fuel mix screws. Set the idle a tad higher and the fuel mix to less rich. Still having the same problem. I reckon its got to do with either the dizzy as most of you have said so far or perhaps the fuel pump? What could be wrong with the dizzy and what should I check for? Appreciate the help once again.