Constant misfire ??????

[Tony Griffiths]

Cheers guys, just back from a break, so will investigate all the above suggestions over the next few days, and report my findings.
Charles L, what did you mean by "fractured connection in the distributor " do you mean a crack in the Dizzy Cap ???

Not the cap — the bit that runs round and connects to the condenser

If the strip is broken (and I've come across one or two in the past) just replace it with a short length of wire.