Black crumbly stuff

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DaSpeedster
Lookin' Around
Lookin' Around
Posts: 61
Joined: Thu Apr 25, 2013 7:07 pm

I took my carbs off, and noticed this rough, black substance lining the ports going into the head that would partially come off on my finger. What is it, and do I need to be concerned that it could get into the cylinders? :nervous:
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