Registered Forum User
Big Twin
Bikes: 916SPS Ratbike + 749R Shed
Posts: 1,030
Join Date: Jun 2001
Location: West Sussex
Mood: Ugly girls (749) are more dirty.....
All I can say is that I have never experienced any kind of smoke issuing from my 748 or 916 exhausts - apart from condensation when bike hasn't been run for a while.
Suggest a compression check would give an indication of valve or piston ring wear.
R
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