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.

 

[La Rana]

Thanks Guys! It didn't look white from being lean and hot, just thought it strange that one side appears unburnt. I'll do the the WD40 test but appreciate the reassurance! My trans fluid is drained right now while I wait for a new plug, so just as soon as it comes in...

 

[john sachs]

Not a problem !