A regular problem, but not (I understand) on 1999 T reg cars. Mine misfires worst when cold and also on small throttle openings. It misses, or "hiccups" every so often, say once in 5 secs. I would be changing the condenser if it had one!. I have put about 6 cans of oil additive through it, flushed it and it is now on full synthetic oil with no improvement.
Anyone any ideas, before I mend it with a 5lb hammer?