Fuji's with the unshielded cable were notorious for being noisy. We sold a lot of Bosch caps to Fuji owners. Now with Bosch being unavailable the best thing is a shielded ignition, next best would be a RCexl cap on the Fuji ignition.
Please note that the Fuji ignition is weak and that adding a resistor RCXL cap and shielding may reduce the spark to the point where it wont run
