1980 XS650G. Pretty much standard.
While running down a long hill, with plenty of twisties, my girl and my mate (behind me on their bikes) alerted me to the huge amount of white smoke I suddenly started generating.
Back home, the smoke seemed to be mainly on one side.
I did a compression check and found 150 and 155; so I assumed valve stem seals.
I found the method of changing the seals, using a little tool, on the various XS forums.
It took four hours (including making up the tool and running out for some tiny pliers) to change both seals on that one side, but it looked like problem solved.
..until a few miles out on a run the next day, when the smoke returned with a vengeance. I checked both the seals I put in.. and they are in place, together with the keeper springs.
It also appears to be smoking a little more on the other side now too ...
What else could cause this ?
failed rings ... but compression is fine ...?
While running down a long hill, with plenty of twisties, my girl and my mate (behind me on their bikes) alerted me to the huge amount of white smoke I suddenly started generating.
Back home, the smoke seemed to be mainly on one side.
I did a compression check and found 150 and 155; so I assumed valve stem seals.
I found the method of changing the seals, using a little tool, on the various XS forums.
It took four hours (including making up the tool and running out for some tiny pliers) to change both seals on that one side, but it looked like problem solved.
..until a few miles out on a run the next day, when the smoke returned with a vengeance. I checked both the seals I put in.. and they are in place, together with the keeper springs.
It also appears to be smoking a little more on the other side now too ...
What else could cause this ?
failed rings ... but compression is fine ...?