rdalexanry
CB750 Member
Hello,
I just acquired a 1981 cb750 that I am trying to get running as the wife's first bike. I can get it to stay running but it idles very high. Cold starting on choke everything seems fine until the choke is off then it stalls unless given throttle. However if given throttle it has a hanging idle at 3k+ rpm. If the choke is engaged again the idle climbs farther. Riding down the road I can't get it to rev past 5k rpm in any gear, and to start it hot the throttle has to be held wide open. It ran fine for a brief minute for me to get a timing light on it and that checks out as far as I can tell. I plan on pulling plugs next to confirm richness, but looking for guidance one where to go from there.
I just acquired a 1981 cb750 that I am trying to get running as the wife's first bike. I can get it to stay running but it idles very high. Cold starting on choke everything seems fine until the choke is off then it stalls unless given throttle. However if given throttle it has a hanging idle at 3k+ rpm. If the choke is engaged again the idle climbs farther. Riding down the road I can't get it to rev past 5k rpm in any gear, and to start it hot the throttle has to be held wide open. It ran fine for a brief minute for me to get a timing light on it and that checks out as far as I can tell. I plan on pulling plugs next to confirm richness, but looking for guidance one where to go from there.