Half of spark electrode is white

[La Rana]

I pulled a spark plug today on my 07 K-9 117 and one side of the electrode is white, the other side brown. I understand this may be from an intake leak? Any other thoughts on this?

 

[Mickmorris]

View attachment 139758View attachment 139759View attachment 139760

I pulled a spark plug today on my 07 K-9 117 and one side of the electrode is white, the other side brown. I understand this may be from an intake leak? Any other thoughts on this?

I can’t see the picture really well but those look ok from what I can see. When you start the bike spray some wd-40 by your intake flanges. You should know right away if you have any leaks there.

 

[La Rana]

Thanks, if you click on the pic they will open and expand. I will try the WD40!

 

[Snuffy]

I agree with Mick. The plugs look ok to me.