This is probably a redundant set of questions/concerns as I think I know what the issue is, but nonetheless it's better to be safe than sorry.
Context: Just finished rebuilding and bench syncing my carbs two or so weeks ago, but it's been raining and I've been busy so they haven't been able to get on. My impatience got the better of me today and I decided to put them back on and fire the bike up under the carport despite pouring rain since I'm eager to see how she runs after a whole tune-up and sitting for a season. Much to my pleasure she fires right up first kick at half-choke, but I quickly have to go and lower the throttle-stop screw to keep the revs from going crazy at idle. From here all is dandy as she's warming up for five or so minutes but as time goes on I notice the revs start to slow down until it kills completely. I play with the throttle-stop screw and get her back up and going but I cannot seem to find a mid point: either the throttle screw is in too much leading to excessive idle rpm or it is too low and gradually sinks down from 2000rpm to zero.
I know the carbs still have to be vacuum synced but shouldn't the bike at least idle long enough to get sufficiently warm enough to actually sync them? I was thinking that perhaps the bike was being fuel starved since I had the gas tank off the bike and connected to the carbs with extra long hoses that may have been preventing adequate fuel delivery. I also noticed that it would sometimes begin to kill after grabbing hold of the throttle without twisting (like it wasn't getting enough fuel or something).
Should any of this concern me; do I just set the throttle screw high enough so it idles without killing to get warm enough to then proceed with a vacuum sync, or is this possibly a larger issue that will preventing the sync from even being achievable. Thanks for any insight guys.
Bike is a CL360 '75 by the way
Context: Just finished rebuilding and bench syncing my carbs two or so weeks ago, but it's been raining and I've been busy so they haven't been able to get on. My impatience got the better of me today and I decided to put them back on and fire the bike up under the carport despite pouring rain since I'm eager to see how she runs after a whole tune-up and sitting for a season. Much to my pleasure she fires right up first kick at half-choke, but I quickly have to go and lower the throttle-stop screw to keep the revs from going crazy at idle. From here all is dandy as she's warming up for five or so minutes but as time goes on I notice the revs start to slow down until it kills completely. I play with the throttle-stop screw and get her back up and going but I cannot seem to find a mid point: either the throttle screw is in too much leading to excessive idle rpm or it is too low and gradually sinks down from 2000rpm to zero.
I know the carbs still have to be vacuum synced but shouldn't the bike at least idle long enough to get sufficiently warm enough to actually sync them? I was thinking that perhaps the bike was being fuel starved since I had the gas tank off the bike and connected to the carbs with extra long hoses that may have been preventing adequate fuel delivery. I also noticed that it would sometimes begin to kill after grabbing hold of the throttle without twisting (like it wasn't getting enough fuel or something).
Should any of this concern me; do I just set the throttle screw high enough so it idles without killing to get warm enough to then proceed with a vacuum sync, or is this possibly a larger issue that will preventing the sync from even being achievable. Thanks for any insight guys.
Bike is a CL360 '75 by the way