Hello binnov8, and welcome to NSR-WORLD.

If it's healthy inside, you will find that most NSRs tend to smoke a little more on one cylinder than the other when first started. However, black smoke sounds unusual. Excessive blue smoke is usually a badly adjusted oil pumo, and white smoke a good sign of a RHS crank seal possibly starting to fail (burning transmission oil). Black smoke could just be carbon burning off the insides of the expansion chambers if it's not been ridden as Honda intended for some time!

Check the jetting as per the tables in the Tech section, but please be aware specific jetting discussion is not allowed in the public forums.
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Andy.
NSR-WORLD.COM

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