Random Dirt Bike Riding Videos/Pictures

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Odd... It's wet but it's crusty... Thoughts? From a 14 ktm 250xcw

Yes. It's carbon build up. Fairly normal for certain castor oils or what I call dirty oils. Yamalube is a "dirty oil". The wetness could be because the plug isn't getting hot enough or you are not riding it in an adequate power range for your jetting.
Things to consider:
How many hrs in top end?
Dirty carb?
Rejetting if the above are addressed.
Worn/weak reeds.
Plugged exhaust.
 
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