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Why is my bike running so lean

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Old Oct 25, 2005 | 04:07 PM
  #1  
thedieselkid's Avatar
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Default Why is my bike running so lean

My mods are in my sig, and my jetting is 195 and 200 on the mains, and 27.5 pilots. I thought the bike was running lean so I took it to the dealership, and they put a probe in the exhaust to find out what the air fuel is, and they told me that it was running lean. I had them tinker with the carbs to try and richen it up some, but it is still a little on the lean side. Any ideas on what needs to be done to fix this problem. Thanks
 
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Old Oct 25, 2005 | 04:21 PM
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Default Why is my bike running so lean

Where is it lean at(idle, midrange, or wot)???? This will help out a bit more......oh, and where do you live(temperature)??
 
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Old Oct 25, 2005 | 04:23 PM
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Default Why is my bike running so lean

stock carbs?
 
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Old Oct 25, 2005 | 04:29 PM
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thedieselkid's Avatar
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Default Why is my bike running so lean

running lean just at wot. Looks like my next mod is going to somethin to get more fuel Maby a set of 35 mm FCR carbs or kms fuel injection.
 
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Old Oct 25, 2005 | 04:31 PM
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Default Why is my bike running so lean

What needles are you running, and at what adjustment? There are plenty of people running similar setups to yours and even bigger ones on stock carbs.
 
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Old Oct 25, 2005 | 04:44 PM
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thedieselkid's Avatar
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Default Why is my bike running so lean

stock needles in the middle clip Maby my carbs have something wrong with them.
 
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Old Oct 25, 2005 | 04:51 PM
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Default Why is my bike running so lean

Originally posted by: thedieselkid
stock needles in the middle clip Maby my carbs have something wrong with them.
You should be able to use stock carbs and make your bike run fine. Try moving the clip on the needle, that will richen it up.
 
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Old Oct 25, 2005 | 04:55 PM
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Default Why is my bike running so lean

Well you should have aftermarket needles, either dynojet or gytr depending on what mains you're running. But that is your problem, your needles need to be on the 4th or probably even 5th clip (from top to bottom).
 
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Old Oct 25, 2005 | 11:02 PM
  #9  
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Default Why is my bike running so lean

i have a set of gytr needles I will put those in and see if it helps. Someone suggested using my stock needles so I did, but I will try the GYTR needles and lift them up some and see if it helps at all.
 
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Old Oct 26, 2005 | 01:45 AM
  #10  
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Default Why is my bike running so lean

Try the gytr needles on the 3rd and 4th clips, one of those should fix your problem. If not, we're here.[img]i/expressions/face-icon-small-smile.gif[/img]
 
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