ORIGINAL: icabod
I get radio interference when the ignition wire is connected to the sparkplug, and when I unplug the spark plug wire from the spark plug it goes away. What do you think would cause this since the ground is supposed to be in the spark plug wire?
Don't want to sound like a smart ***** but yes the interference would go away with the plug lead disconnected. The engine wouldn't run .... therefore, no interference.
Seriously though, this sounds like a common problem. Are you sure you are pushing the plug lead far enough onto the plug? If you are using the common Rcexl ignition or something similar that uses a metal plug cap, all of the hex part of the plug should be covered when the cap is pushed on far enough.