Hi Y'all,
Manual calls out these specs:
Secondary coil winding resistance - 10-15 K-ohms
Plug caps - 10 K-ohms
My bike is running normally and I didn't check the coils, but I did check the caps while I was clipping 1/4" off the ends of the plug wires and re-attaching them (a little preventive maintenance). A PO has replaced at least the front caps. The two rears don't have a brand name on them and I don't know if they are original, but they each have about 8.5 K-ohms. The front caps are NGK and are each 5 K-ohms.
I figure, given the wide range of acceptable resistance in the secondary windings, that the spark probably doesn't really care that the fronts and rears aren't exactly the same. But I was wondering if 5K-ohms in the front (compared to the spec of 10) could contribute to ignition noise in the radio - not enough resistance for proper noise suppression. I don't understand noise suppression, so this is a wild guess. Does anybody know?
Thanks,
Jeremy