While troubleshooting an intermitent miss under accelerating conditions, I found the secondary of the ignition coil on my 1991 420 SEL to be "open", that is, infinity between terminals 1 & 4. Yet I get spark and the car runs fine except for the persistant miss under load conditions. Could the coil actually be "open" yet provide enough energy to jump the open gap and provide spark to the plugs?

J.Chip