08 running lean - Kawasaki KLR 650 Forum
2008+ KLR650 Wrenching & Mod Questions For repair, maintaining or modifying discussions related to the newly updated 2008 and beyond, Generation 2 KLR650 Motorcycle.

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post #1 of 3 Old 07-02-2013, 11:15 AM Thread Starter
Join Date: Jun 2012
Posts: 6
08 running lean

Hey all,

I have an 08 that runs very lean (spark plug is white). I've turned the (can't remember the name) screw on the bottom of the carb out 1 1/2 turns but no change. Was wondering if there is anything else I can do/check to help my bike run a little richer?

Thank you in advance for any input.....
Phil Behm is offline  
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post #2 of 3 Old 07-02-2013, 11:40 AM
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Join Date: Feb 2009
Location: Redondo Beach
Posts: 7,678
Yes, do the 22 cent mod. That will enrichen the mixture at large throttle openings. The idle mixture screw on the bottom only adjusts the mixture up to about 1/4 throttle.

See this thread, and review the topic here.


Tom [email protected]

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post #3 of 3 Old 07-02-2013, 12:32 PM
Join Date: Mar 2012
Posts: 411
Look at blocking off your AIS system too. It is part of the emission control garbage on the 08+. I don't have a genII but I hear disabling that helps with the lean condition. Plus reading a plug is not what it used to be, you can but it is more involved than the color of the insulator since our hybrid fuels...
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