| Turns out I dont think this is unburt fuel now.
One mate thinks its a valve stem seal.
So, I may have a stem seal damaged as the bike is smoking on part throttle.
Does anyone know if the stem seals can be changed without taking the cylinder head off?
I don't have an exploded drawing showing the arrangement.
If the stem seals are pressed into the valve guides then I would think the head has to come off. |