idle screw - 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 23 Old 07-26-2008, 05:28 AM Thread Starter
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idle screw

Had my 08KLR for a week and have had enjoyed breaking her in.I have noticed at idle it floats between 1100 and 1500 revs, today it went up to about [email protected] so i turned down the idle screw down a bit at the traffic lights and the bike stopped.When i hit the starter it turned over but would not fire in any throttle position.I had many attemps to start it again with no luck,not wanting to flatten the battery i waited about 10 mins and then had another shot at which point it started.Then it would run obove 3000 but would stall at anything bellow that.After giving her a good run up the highway she seems to have stopped stalling but still floating between1100 & [email protected] idle ,any info would be apreciated,thanks.
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post #2 of 23 Old 07-26-2008, 08:05 AM
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There have been some issues with the 08's doing exactly what you describe, but with different issues causing it. To me it sounds like you might have some bad fuel. If it is not wanting to run below 3000, that usually means the idle jet is clogged. The idle jet is what delivers the fuel up to 3000 RPM's to which the Main Jet needle opens up and the Main Jet delivers fuel above that. You might try using a gas additive to clean out the carb and fuel system. Also it would be beneficial to pop the plug out closing off the idle mixture 'screw' and open it up about 2 full turns. This will aide in better cold starts and will normally remove any surging you might feel while riding.
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post #3 of 23 Old 07-27-2008, 05:15 AM
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Sound's like a faulty TPS { throttle position sensor} to me, i could be wrong but what you are describing has happened on other bike's and has turned out to be the TPS.......... Take it into your dealer and make sure they sort it out, you've paid for your warranty to fix stuff like this mate..
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post #4 of 23 Old 07-27-2008, 10:16 AM
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If its a California model you can't top them of or it causes problems running because gas will mess with the emmissions system. It tells you about it in the owners manual. Hope it's an easy fix
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post #5 of 23 Old 07-27-2008, 04:37 PM
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Quote:
Originally Posted by Bratski View Post
Sound's like a faulty TPS { throttle position sensor} to me, i could be wrong but what you are describing has happened on other bike's and has turned out to be the TPS.......... Take it into your dealer and make sure they sort it out, you've paid for your warranty to fix stuff like this mate..
Don't recall the KLR's having any sensors, it's all mechanical....
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post #6 of 23 Old 07-28-2008, 05:22 AM Thread Starter
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Thanks for the advise folks ,handy stuff!
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post #7 of 23 Old 07-28-2008, 06:57 AM
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I think you will find that the new model indeed does have a throttle position sensor on the Keihin CVK40........
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post #8 of 23 Old 07-28-2008, 07:08 AM
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The power plant in the 2008 model has a multitude of revisions. Revised cam timing, a now fully transistorized ignition system, an added throttle position sensor on the Keihin CVK40, as well as a balancer system revision.
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post #9 of 23 Old 07-28-2008, 07:16 AM
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Oh yeh ... we don't get Californian bike's here in Oz and thank god for that by the sounds of it, our emmisions standards are bad enough thank's. Lol
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post #10 of 23 Old 07-28-2008, 07:44 AM
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Hey all, I'm not trying to nitpick here but where is the TPS throttle position sensor? What sort of input does it give the the computer and why? And also, where is the computer to recieve this information? Ususlly TPS's are only on injected units. That allows the computer to calculate that amount of fuel that's desired. By the way, I looked it up here http://www.babbittsonline.com/pages/...d/default.aspx and could find no part number or any TPS on the exploded view. Perhaps this is only available to non US bikes?
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