hanging idle....i think
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hanging idle....i think
I think I have what I've heard called a hanging idle. Basically seems like it doesn't want to calm down and idle correctly. I no it's not just my idle set high, because the bike will set on idle for a little bit, then it catches it's breath and speeds up again. I am very new to this particular bike, and have made no jetting changes yet, nor can I remember what is in it. BTW 91 kdx 200. I guess my real question is what exactly is a hanging idle and where to you look for a cure? Is it sucking air from somewhere, the boots both look good, should I be looking elsewhere.
04' WR250F--All the standard mods
91' KDX200 (a.k.a. The White Ghost)--not much done yet
01' XR80-kids
01' XR50-kids
85' GS550E--For Sale
91' KDX200 (a.k.a. The White Ghost)--not much done yet
01' XR80-kids
01' XR50-kids
85' GS550E--For Sale
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Have you taken the carb apart and inspect / cleaned it yet? That's always a good place to start.
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- Colorado Mike
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It could also be that the pilot jet is too lean or clogged. Like Jason said, clean that thing up perfect, set the float level whether you think you should or not. Then see what it does. If you tell us what jets are in it and your altitude, somebody could probably give you an idea if its jetted stupid or not.
Mike
Life's tough, it's even tougher if you're stupid.
'04 KDX220
Life's tough, it's even tougher if you're stupid.
'04 KDX220
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I would try turning in the air screw about 1/2 turn. If the bike idles ok and performs well then it was nothing more than a just slightly lean pilot jet/air screw setting.
Notice any surging when slowing down and using engine braking in 2 or 3 gear?
Notice any surging when slowing down and using engine braking in 2 or 3 gear?
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Sounds like an AIR LEAK, but rip, clean and clean the carb first, then adjust
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2008 DRZ400SM
2005 KDX 220R
1985 KDX 200A3
2005 KLX 125L (SONS)
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Thanks to my 2008 Sponsers:
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I would check the manifold area, spray the area like FUZZY said and listen for a change in idle. Make sure the screws are holding the clamps tight enough. Also, clean the inside of the manifold to ensure a clean, tight fit.
Check the floats and fuel valve. Maybe something is out of whack and you are not getting enough fuel, which will give you higher idle.
Check the floats and fuel valve. Maybe something is out of whack and you are not getting enough fuel, which will give you higher idle.
"Growing Old is Mandatory, Growing Up is Optional"
2008 KLX450R
2008 DRZ400SM
2005 KDX 220R
1985 KDX 200A3
2005 KLX 125L (SONS)
2003 KTM 50SX Pro Jr
B Senior # 254/0092
http://sponsorhouse.loopd.com/Members/R ... fault.aspx
Thanks to my 2008 Sponsers:
Dunlop, SteelMX, Amsoil, Simpson, Pro Works Racing, Pro Moto Billet, SLAP Energy,Boyesen, Rhino Stands, SixSixOne/SunLine Moto for your support.
John W Read Jr
2008 KLX450R
2008 DRZ400SM
2005 KDX 220R
1985 KDX 200A3
2005 KLX 125L (SONS)
2003 KTM 50SX Pro Jr
B Senior # 254/0092
http://sponsorhouse.loopd.com/Members/R ... fault.aspx
Thanks to my 2008 Sponsers:
Dunlop, SteelMX, Amsoil, Simpson, Pro Works Racing, Pro Moto Billet, SLAP Energy,Boyesen, Rhino Stands, SixSixOne/SunLine Moto for your support.
John W Read Jr
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If all the above fails, check the area behind the stator plate, as there are three depressions which can have a slight leak. Fredette and Gorr mentioned this area. The three areas are on 1989 - 1994 engines where the aluminum and steel heat up at different rates. The areas are suggested to be roughed up and filled in with J-B Weld or similar. Mine had a slight leak there. If you take off the cover and it has an oily mess in there, then you know it is time to fix it.
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Thanks for all the insight. I will try all the above mentioned soon. It never surges on me that I can tell, and the boots both look good. I will check them with some WD, then clean my carb again.
04' WR250F--All the standard mods
91' KDX200 (a.k.a. The White Ghost)--not much done yet
01' XR80-kids
01' XR50-kids
85' GS550E--For Sale
91' KDX200 (a.k.a. The White Ghost)--not much done yet
01' XR80-kids
01' XR50-kids
85' GS550E--For Sale
- m0rie
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Other things to check include the carb vent hoses (make sure they are not blocked or obstructed), the air filter is oiled and installed correctly and that the pipe/case junction is sealed correctly.
-Maurice
-Maurice
1989 KDX 200
2007 TTR-50E
2007 TTR-50E
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Thanks all.
Got it fixed. It was just my air screw. Not set right at all, as well as my idle screw. I had no leaks in the boot nor any vent lines blocked or pinched.
I've really been enjoying having a 2-stroke to rip on again, wouldn't trade my wr, but still gotta love the kdx!
Got it fixed. It was just my air screw. Not set right at all, as well as my idle screw. I had no leaks in the boot nor any vent lines blocked or pinched.
I've really been enjoying having a 2-stroke to rip on again, wouldn't trade my wr, but still gotta love the kdx!
04' WR250F--All the standard mods
91' KDX200 (a.k.a. The White Ghost)--not much done yet
01' XR80-kids
01' XR50-kids
85' GS550E--For Sale
91' KDX200 (a.k.a. The White Ghost)--not much done yet
01' XR80-kids
01' XR50-kids
85' GS550E--For Sale
- KDXGarage
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- Posts: 14061
- Joined: 06:45 am Nov 01 2004
- Country: United States of America
- Location: AL, USA
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Woo-hoo! I am glad to hear that you got it sorted out. Keep ripping!
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- canyncarvr
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Is this where I chime in with, 'I'm glad I wrote up a typically over-long and smarty pants response saying basically 'What IC said, first' (K.I.S.S.)...but it got lost someplace!!'?
Nah!
My point was, on a reasonably well maintained bike a 'hanging idle' will be likely largely due to an air screw/idle adjustment.
Glad it was simple...and that it's done!!
Nah!
My point was, on a reasonably well maintained bike a 'hanging idle' will be likely largely due to an air screw/idle adjustment.
Glad it was simple...and that it's done!!
Consider the source
Using a perceived level of knowledge to boost my self worth.
Non impediti ratione cogitationis
bike profile: !clicky!