Been out in the B today running great, I stopped to put in petrol 30 liters up to the top, I drive home about 5 miles all is fine, but go out after tea with the wife for a run and after 5 min's I get this misfire anything below 3000 rpm above that its fine (sounds a bit like a Cobra V 8) The only thing I have done in the mean time was to wash her, but not under the bonnet! any ideas?
Chris
Chris