Hi all,
I bought a 1973 XS2 last year to build a street tracker. I decided not to re-build the engine straight away as it ran
Now almost finished I have ridden it a few times and everything was great until the left hand side went a bit fluffy, around about the same time as there was an odd clunk, not too loud or worrying, from the engine. Not even a clunk really, what is less than a clunk but more than normal?
I went back to work overseas and a few months later came home, started her up. She ran for a minute, nicely on the right not so nicely on the left, then cut out.
I had ordered some later carbs, linked ones, off e bay so when they arrived I put them on and now she won't start. I have used a big old battery to turn her over on the electric start and there is compression on the exhaust side and suction through the carbs.
I put the old carbs back on and still no joy.
Today I have checked that there is a good spark and the points are opening at roughly the right time. I am pretty sure that fuel is getting through too, I can smell it although there isn't even a bang or a pop due to unburnt fuel in the cylinders which I would expect after turning it over for a minute or two.
Any ideas?
Has anyone ever known a cam belt to jump and thus affect timing?
Any pointers, clues or hints would be gratefully received.
Many thanks.
Tim.
I bought a 1973 XS2 last year to build a street tracker. I decided not to re-build the engine straight away as it ran
Now almost finished I have ridden it a few times and everything was great until the left hand side went a bit fluffy, around about the same time as there was an odd clunk, not too loud or worrying, from the engine. Not even a clunk really, what is less than a clunk but more than normal?
I went back to work overseas and a few months later came home, started her up. She ran for a minute, nicely on the right not so nicely on the left, then cut out.
I had ordered some later carbs, linked ones, off e bay so when they arrived I put them on and now she won't start. I have used a big old battery to turn her over on the electric start and there is compression on the exhaust side and suction through the carbs.
I put the old carbs back on and still no joy.
Today I have checked that there is a good spark and the points are opening at roughly the right time. I am pretty sure that fuel is getting through too, I can smell it although there isn't even a bang or a pop due to unburnt fuel in the cylinders which I would expect after turning it over for a minute or two.
Any ideas?
Has anyone ever known a cam belt to jump and thus affect timing?
Any pointers, clues or hints would be gratefully received.
Many thanks.
Tim.