This normal. What it means is that at idle or cruise, you are a touch richer than needed. Or that your exhaust is a bit restrictive, leading to a bit less scavaging than the engine wants.
If you look at the plugs, you should see a nice brown color on the insulator. If you are still running the original plugs, they will be black - from break-in.
On mine, a good bit of it went away when I did the header mods. But then again, I am always playing with the bike and its tuning. My plugs run a nice tan color.
I hope this helps.
If you look at the plugs, you should see a nice brown color on the insulator. If you are still running the original plugs, they will be black - from break-in.
On mine, a good bit of it went away when I did the header mods. But then again, I am always playing with the bike and its tuning. My plugs run a nice tan color.
I hope this helps.