Right Front Plug does not appear to be firing.
When changing or cleaning the plugs, I had noticed the right front plug appeared to be fouling.
Installed Iridium plugs and after approx. 400 miles I checked the right front plug and it was oiled and gummed up; the left side plug was clean and appeared normal.
I disconnected the right front plug and started the engine; it ran ok; I then installed a standard plug in the right front connector and when grounding the plug it was arcing.
Then I pulled the right rear plug wire and the engine slowed a little during idle and when reconnected the idle speed came back up to where it was. This leads me to believe the right front is not firing.
The bike does not appear to be using any oil; level is the same; no exhaust smoke.
I am thinking it is a defective ignition coil; any other suggestions would be appreciated.
Does anyone have any experience with this type of problem? Which is most likely to be the problem; plug wire, plug cap, coil.