Tom,
I bought a digital timing light today and trying to troubleshoot my results.
I set idle advance to 11deg btdc at ~650 engine rpm. I can run the engine up past 3000 and get ~32 deg mechanical w/ vacuum disconnected. However when I ease off the throttle the idle advance does not return to 11 deg. Instead it stays around ~20 deg. Bringing idle back to 650 or so doesn't help. Checking the weights and springs I see nothing that would cause this and after shutting down, remove, reinstall cap the idle advance goes back to where it should be until I push rpm again. I thought maybe the advance springs were weak and switched to the 2 silver ones in the Crane kit- same results. I also checked my timing light against another with same results at idle.
Any ideas?
