Nothing to do with oil, it's usually because one cylnder is jetted correctly so is burning all the mixture, and the other is too rich (or not sparking fully) and some of the mixture is not burning in the cylinder but getting very hot in the exhaust so appears as smoke.

What colour are the spark plugs?
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MC21SP Plaything
BMW F800GS Bumblebee
Triumph 9551 Daytona Big boys toy
FJ1100 Sporting relic
GTS1000 oddball



Last edited by Dave Ett on Sun Sep 24, 2006 5:40 am; edited 1 time in total