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The main cause of motorbike smoke is when the diesel is being burned and used in the engine. This smoke causes pollution to the environment.
Blue smoke is burning oil.
Black smoke from an engine is caused by unburnt fuel.
blue smoke is oil. white smoke is water. black smoke is unburnt fuel
the engine is burning oil. blue smoke oil white smoke antifreeze black smoke excess fuel
if it is white smoke engine need to rebuilt.
to much of it can stop our system
unburnt fuel
what causes a 125cc motor to smoke and burn oil ? and is it fixable
If the smoke is black it could be caused by a faulty fuel pressure regulator which could be causing the engine to get too much fuel.
You probably have a little oil seeping into the combustion chamber while the engine is off. Once you start the engine, this oil is burned and causes the smoke you see.
usually a cracked head but i dont think that bike is liquid cooled