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Yamaha Tech Originally the Yamaha XT600 Tech Forum, due to demand it now includes all Yamaha's technical / mechanical / repair / preparation questions.
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  #1  
Old 17 Dec 2012
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Problem with my XT carb

As I posted in my other thread ( cam chain or timing problems) and trying to solve a failure of my bike, I notice now that my carb works better with choke out. I mean at normal position it sputters a little bit at low revs and with the choke out it runs better but with a little acceleration when changing gears. When I as have noticed before and with other bikes that bikes once they warm up you return the choke to normal position otherwise it would not run well.

Can you enlighten me on this issue?
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Old 17 Dec 2012
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Quote:
Originally Posted by rich7 View Post
As I posted in my other thread ( cam chain or timing problems) and trying to solve a failure of my bike, I notice now that my carb works better with choke out. I mean at normal position it sputters a little bit at low revs and with the choke out it runs better but with a little acceleration when changing gears. When I as have noticed before and with other bikes that bikes once they warm up you return the choke to normal position otherwise it would not run well.

Can you enlighten me on this issue?
Too lean - see my post to your other thread about jetting.
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Old 17 Dec 2012
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The carb is dirty and blocked somewhere , or your rubber inlet manifolds are dead.
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Old 10 Mar 2013
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How old is your bike? As 2499 has said you may have an air leak from a split in your manifold. Was it fine before and changed ? Did you just buy it and was this way when you got it? Need some info. It could be several things, Jetting, Airscrew Air filter Missing,ETC. Let us know.
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