My series IIa (2.2 petrol) used to tickover very nicely but has been getting rougher and rougher over the past year. I have tried most obvious things - new carb (twice), new HT leads/distributer/plugs/coil but its till runs like a dog at tickover.
The main symptom is an irregular tickover and a tendency to cut-out when stopped at traffic lights, its fine when your are moving.
Can anybody suggest a possible cause or (even better) suggest somebody who can do a decent tune-up near SE London.