When running with the point cover off the lower points/right side appears to make a much more visible spark than the other.
+1 ...What nick said
Replace this sides condenser. ... hell buy a pair , you dont need to replace the old good oone ... but its nice to have a spare around .
Explaining why is complicated.
A simple ... half right explanation is the condenser
Helps snuff the arc across the points as they open ... extremely quickly .
The points , as a switch operate more efficiently ...and with less wear and tear .
The voltage saved from being wasted as a spark accross the points .
is then returned to the coil as a a resonant connection .
The voltage saved and returned. By the condenser is also above primary voltage .
Because its dealing with the voltage spike generated by the primary currents collapse .
It does not seem like much ... but its an important job .