Monty, many thanks for the heads up on the many and varied types of digital interrogation equipment that can measure and monitor and in a shorter period of time than any human brain....

Which is just great when it all works.

On the other hand such is the degree of digitisation built into modern vehicles that some can spend inordinate lengths of time, or making repeat journeys to official dealerships with recurring faults that seem to elude those challenged with resolving them... Give me a set of carbs and points, and chances are that I can fix it at the side of the road..... as I have managed in the past.... But then I am nought but an old selective Luddite inclined to rant on a bit on occasion... (-: