a while back there was a post about engines coughing or stuttering, mostly in the cold, and i am not sure an answer was arrived at. i can not find the original post so unfortunately i can not familiarise myself with the background to this matter, but i have been lucky enough to find another possible cause of this problem with a fairly simple solution.
i took the carb off my bike on the weekend, and i noticed that the rubber joins between the carb and the top end of the engine were totally perished, only held in place by the force of being pushed forward by the air box joins from the rear.
these 2 joins are something like exhaust manifolds, they are short pieces of rubber piping that ensure an air tight attachment of the carb to the engine. as such, perished units like i had were letting through too much air with the fuel-air mixture, which i suspect was the reason for my engine occasionally stuttering/wheezing, even when warm.
with the new joins in place, my bike is purring again. this could also have something to do with having cleaned the carb, but i think the manifolds were a large part of the problem. if i had not removed my carb, i would not have noticed that these parts needed replacing.
hope this is of use to anyone having this problem.
[This message has been edited by cabron (edited 09 April 2003).]
...ships are safe in harbour, but that\'s not what they were built for...