Spark plugs! One side differently colored?

[DanMach]

Was doing my usually check up and maintence stuff and pulled the plugs for the first time since I had about 30 miles on them. The bike runs fine, idles ok, doesn't backfire or misfire, but I was kind of confused about the plugs.

One each plug one side is darker than the other and noticably so. A reddish black color. Pictures below... I've googled around a bit and most people seem to say its "normal" and its caused by the exhaust spending more time on that side of the plug as it exits the head..

Anyone got opinions? Oh! Bike stuff: No oil loss(I take pictures of the oil levels and compare them.. it literally never changes), no issues with it, just the coloring of it worries me.

You can view the images here: http://imgur.com/a/uFCQi

Hope that link works...

 

[OliverB]

With the bike running as you indicated, I wouldn't worry about it. They look normal to me.

 

[xschris]

Look fine to me, its just where the gas is hitting the plug from the intake and is a little richer than the other side. Your good dive the f**k out of it

 

[bentwrench]

I think this is a case of over-anxious rider... If it works, don't fix it!

 

[DanMach]

More a case of 'guy who got new job and relies on bike for 40 miles round trip to keep said job.'

Thanks everybody! Can't be too careful.

 

[wrstar]

well i would say the gaps on the plugs are different..
did u do it on purpose?

 

[Scorpio1963]

well i would say the gaps on the plugs are different..
did u do it on purpose?

Yeah those plugs should be gapped correctly

 

[wrstar]

Yeah those plugs should be gapped correctly

i mean the RHS one is different from RHS one

 

[Scorpio1963]

IF it were me I would richen the side where the red plug came from by a half a turn.The color is also a sign of it running hotter than it should,your plugs and ceramic around them should be tanish brown.

 

[Scorpio1963]

http://www.ngksparkplugs.com/tech_support/spark_plugs/faqs/faqread.asp