no spark

Hi all, I have been working out of state and as such the bike sat for over a month ('73 Commando Roadster). I have the battery on a tender, and after a few kicks I managed to get the bike started, but as I let the clutch out I stalled and have not been able to start it since. After several...

Hello everyone! I have a 1973 Norton Commando 850 that has a problem with getting spark on the left side. I cannot get ANY spark to come from that side. Here is what I know: Both coils are good (if I swap the wires from the right side coil to the left, the left fires, so it has to do with the...

After many months my P11 is running, but only on one cylinder. After realizing this issue, I got new plugs (had the wrong ones anyway) and then, out of curiosity, switched the coil leads between the cylinders. Well color me surprised when I found out the left side cylinder (we'll call it...