Could be the clutch cable needs adjustment as it's not disengaging fully. Does the bike still want to move forward if your in gear with the clutch in?
Does it still stall if your in neutral?
Does it still stall if your in neutral?
CBR250RR Stalling Issue
Hey All
First of all wanted to say Hi and great job with the new look of the forums.
I live in Sydney and have owned a '99 MC22 (Australian delivered model) since September last year. I got the bike when I was on my learners and have got my provisional license since then. Have had great fun on the baby CBR
I've recently noticed an occasional problem where the bike will stall when the clutch is pulled in and the brakes are applied (such as when stopping for a traffic light). At other times the revs will drop very low and it'll *just* manage to avoid a stall, and at other times it will just drop to the normal idle RPM like nothing is wrong so it's a very occasional issue. I suspect it's a vacuum leak of some sorts but am unsure where to start looking :huh:
The bike was serviced recently with new oil and a filter and the 'vacuum plugs' were also changed, but this has not helped the problem. I also replaced the spark plugs a few months ago. I've currently resorted to setting the idle speed up to around 1800RPM (was 1500 before) as this seems to help avoid the issue.
Any ideas on what is causing this and how it can be fixed?
First of all wanted to say Hi and great job with the new look of the forums.
I live in Sydney and have owned a '99 MC22 (Australian delivered model) since September last year. I got the bike when I was on my learners and have got my provisional license since then. Have had great fun on the baby CBR
I've recently noticed an occasional problem where the bike will stall when the clutch is pulled in and the brakes are applied (such as when stopping for a traffic light). At other times the revs will drop very low and it'll *just* manage to avoid a stall, and at other times it will just drop to the normal idle RPM like nothing is wrong so it's a very occasional issue. I suspect it's a vacuum leak of some sorts but am unsure where to start looking :huh:
The bike was serviced recently with new oil and a filter and the 'vacuum plugs' were also changed, but this has not helped the problem. I also replaced the spark plugs a few months ago. I've currently resorted to setting the idle speed up to around 1800RPM (was 1500 before) as this seems to help avoid the issue.
Any ideas on what is causing this and how it can be fixed?
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I originally suspected the clutch as well - But it is adjusted so that it becomes fully disengaged when pulled all the way in. Also the bike does not seem to want to creep forward with it pulled in so I'm thinking it should be ok.
The Dwarf sent me a PM while this thread was locked, so I'll post it here so others can see:
In neutral, the revs tend to however a bit around +/- 100-200 RPM around the set idle speed (not sure why this happens). Pressing the brake when in neutral does not make any difference.
When I got the bike serviced about two weeks ago I believe they balanced the carbs and said the battery was at 13.5V, but will double check when I get home.
Thanks all for the help so far
The Dwarf sent me a PM while this thread was locked, so I'll post it here so others can see:
The bike doesn't stall with the idle increased. Sometimes the revs will drop a little below idle when braking, but nowhere near enough to cause it to stall.The Dwarf said:
In neutral, the revs tend to however a bit around +/- 100-200 RPM around the set idle speed (not sure why this happens). Pressing the brake when in neutral does not make any difference.
When I got the bike serviced about two weeks ago I believe they balanced the carbs and said the battery was at 13.5V, but will double check when I get home.
Thanks all for the help so far
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