Joined
·
234 Posts
This has probably been asked before, but I haven't found it using search.. so..
Just got my 350 up and running - excited about that. However, I have two issues that may be linked.
1. Bike will not start or run without the throttle manually held a little open. I assumed that at 'idle' the throttle is supposed to be completely closed (meaning that the throttle body in the carb is completely closed). Manuals had no info on this at all, so I don't know if I'm wrong or right. I tried getting it warm and adjusting the idle screws on the carbs, but that really doesn't do anything (perhaps they're gummed up), but I wouldn't really expect it to since the throttle has to be open for the bike to "idle" rendering the adjustment screws pointless (right?).
2. Since I can't close the throttle and have the bike stay running, I can't get the RPMs down very fast. I open the throttle, RPM's get to 4-6K, close throttle, RPMS then SLOWLY go back down to about 1.2K. This is a problem when riding and shifting (especially shifting). Again, I think this is due to not being able to close the throttle all the way.
Upon inspecting the carbs very very closely, I see three pinholes that may be the problem (these are located on the 'engine' side of the carb). One I think is the idle mixture 'vent' where air and fuel goes through to the cylinder when at idle (this being the front most hole). The next two are covered when the throttle is completely closed, but I assume these two are more of the same kind of thing. Are these likely to be the problem?? I've had so much trouble with these carbs and so little trouble with everything else that I kind of regret not spending the big bucks to get them ultra sonically cleaned - so any 'cheap' fixes would be really really helpful.
[I've cleaned and replaced jets (with correct sized jets), cleaned carbs, replaced needles (again, with the correct size, double checked), and replaced idle screws (double checked too)]
Just got my 350 up and running - excited about that. However, I have two issues that may be linked.
1. Bike will not start or run without the throttle manually held a little open. I assumed that at 'idle' the throttle is supposed to be completely closed (meaning that the throttle body in the carb is completely closed). Manuals had no info on this at all, so I don't know if I'm wrong or right. I tried getting it warm and adjusting the idle screws on the carbs, but that really doesn't do anything (perhaps they're gummed up), but I wouldn't really expect it to since the throttle has to be open for the bike to "idle" rendering the adjustment screws pointless (right?).
2. Since I can't close the throttle and have the bike stay running, I can't get the RPMs down very fast. I open the throttle, RPM's get to 4-6K, close throttle, RPMS then SLOWLY go back down to about 1.2K. This is a problem when riding and shifting (especially shifting). Again, I think this is due to not being able to close the throttle all the way.
Upon inspecting the carbs very very closely, I see three pinholes that may be the problem (these are located on the 'engine' side of the carb). One I think is the idle mixture 'vent' where air and fuel goes through to the cylinder when at idle (this being the front most hole). The next two are covered when the throttle is completely closed, but I assume these two are more of the same kind of thing. Are these likely to be the problem?? I've had so much trouble with these carbs and so little trouble with everything else that I kind of regret not spending the big bucks to get them ultra sonically cleaned - so any 'cheap' fixes would be really really helpful.
[I've cleaned and replaced jets (with correct sized jets), cleaned carbs, replaced needles (again, with the correct size, double checked), and replaced idle screws (double checked too)]