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

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)??

Why is my bike running so lean
 

stock carbs?

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.

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.

Why is my bike running so lean
 

stock needles in the middle clip Maby my carbs have something wrong with them.

Why is my bike running so lean
 

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.

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).

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.

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]