OK stumped! I have tried again at getting a solution to the misfire and I am stuck now, on the inactive cyl I get 12v feeding into the coil and with coil attached to the plug there is a continuous feed right through the coil and onto the other wire on the plug lead, assuming the cranking of the engine breaks this circuit and the spark then jumps ie at the spark plug the voltage only dropped to roughly 9v so its difficult to know whether it was enough to break a circuit. On a known cyl that sparks well, the voltages are exactly the same as the inactive cyl?
Anyone out there with some knowledge of my trouble please would be greatly appreciated?
The man you need is Mike M, who unfortunately doesn't seem to be around much since he sold his 164.
As I mentioned above, with the traditional set up of 1 coil & HT leads, the HT voltage was generated when the 12v feed was cut, (becasue the voltage produced by the coil is dependent on rate of decay of the magentic field & it was easier to have a a really sharp cut off than build up in current).
Based on that, it seems possible the coil may be mostly at 12v, being switched off to give a spark. I'm not sure how you can detect if the current is being switched, as it must be happening fairly quickly.
On a traditional system, you could've used a stroboscopic timing light, but they used the HT leads either directly or by induction.
I presume some one else may know more.
Have you tried looking in the other forums? - anything younger than the 164 will have equivalent ignition systems