Running lean?
#1
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Hey everyone, what I would like to know is if the symptoms my bike is experiencing is due to the carb running lean. It usually takes a good 3-5 mins of cranking to get it to start cold and another couple minutes with the choke on or hit the throttle to stay idle. I have a 06 250 Bruin with stock Mikuni 33mm carb. Could I adjust the carb to make it run richer? once it's warmed up it runs fine.
#4
![Default](https://atvconnection.com/forums/images/icons/icon1.gif)
Hey everyone, what I would like to know is if the symptoms my bike is experiencing is due to the carb running lean. It usually takes a good 3-5 mins of cranking to get it to start cold and another couple minutes with the choke on or hit the throttle to stay idle. I have a 06 250 Bruin with stock Mikuni 33mm carb. Could I adjust the carb to make it run richer? once it's warmed up it runs fine.
Another sign is a backfire during engine braking or deceleration.
If everything is stock and its running lean, you may have a leak in your air box, or on the intake somewhere before the carb.
The cold starting problem might not have anything to do with a lean condition. Especially a slight lean condition.
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