Join Date: Sep 2004
Location: Medford, County of Jackson, Oregon, USA
Model: None at present
Yep, I had a similar problem on an '82 Aspy. It wasn't the vacuum advance on that one but the centrifugal advance was frozen. The two different advance systems work for different purposes on these bikes, the vacuum advance shifts the timing to adjust for quick throttle changes while the centrifugal advance adjusts for the rpm range the engine is running.
None at present
Past 'Wings: GL1100, GL1200, GL1500, GL1800
Current BMW C650GT