Thanks to all for comments. I am a bit puzzled Speedy as to why I need to check the timing? Surely if I put it back the way it was before, with points set and plug gap set the same, the timing should also be the same. There is only one way that the flywheel can go on.
I will try an EI first. If no luck then put back the points and condenser.
I think Ironbark might have hit the nail on the head, as I recall my first attempts to upgrade an older Briggs, I positioned the EI module on the plate where the old points were. It would not work, probably because it was within the magnetic field. Later I re positioned it on the outside of the cowl, a long way from the coil, and it worked.
I still can't understand why a module will not work. In theory it should. I have tried the same modules on a lot of very different engines, both 2 and 4 stroke and they work. As I said I did have problems with a Kirby Lausen, but as those engines can be prone to multiple problems, it is difficult to say exactly what the problem was in that case. I still dislike Kirby engines with a passion and refuse to touch them.
