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Offline 151russellcr125

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cr125 idle problem
« on: June 02, 2012, 03:13:36 AM »
i just rebuilt my 2000 cr125 and when i start it, it idles really high. ive cleaned the carb, put it back together the way my manual said, i even took the idle speed screw almost all the way out... PLEASE HELP!!!!
« Last Edit: December 31, 1969, 04:00:00 PM by ' »

Offline riffraff

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cr125 idle problem
« Reply #1 on: June 02, 2012, 03:31:24 AM »
I have an '01 cr250 that does the same thing, idles ok under a load though
« Last Edit: December 31, 1969, 04:00:00 PM by ' »
aaahhhhh yes, I remember the good old days

Offline 151russellcr125

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cr125 idle problem
« Reply #2 on: June 02, 2012, 03:48:21 AM »
what do u mean, under a load?
« Last Edit: December 31, 1969, 04:00:00 PM by ' »

Offline SachsGS

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cr125 idle problem
« Reply #3 on: June 02, 2012, 03:56:11 AM »
Is your slide bottoming properly in the carb?
« Last Edit: December 31, 1969, 04:00:00 PM by ' »

Offline riffraff

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cr125 idle problem
« Reply #4 on: June 02, 2012, 05:22:06 AM »
If I let the clutch out just until it starts disengaging the idle will drop to normal and while riding I can close the throttle and it won't rev out
« Last Edit: December 31, 1969, 04:00:00 PM by ' »
aaahhhhh yes, I remember the good old days

Offline 151russellcr125

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cr125 idle problem
« Reply #5 on: June 02, 2012, 05:33:35 AM »
lol what do u mean slide bottoming? i dont know very much about carbs...
« Last Edit: December 31, 1969, 04:00:00 PM by ' »

Offline cnrcpla

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cr125 idle problem
« Reply #6 on: June 02, 2012, 02:58:58 PM »
Quote
lol what do u mean slide bottoming? i dont know very much about carbs..
I just had that issue with my bike. Take the carb off the bike, but leave the throttle cable in the carb. Looks inside and see if the slide is closing off the entire passage way in the carb. If it isn't seating (closing off all flow of air into the engine) then there is your problem.
« Last Edit: December 31, 1969, 04:00:00 PM by ' »

Offline 151russellcr125

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cr125 idle problem
« Reply #7 on: June 02, 2012, 08:41:30 PM »
i dont think its the carborator.. every thing works fine. i probly have an air leak somewhere. i tried closing up the air screw on the carb and that didnt even do it... i might just take it to the shop.... :(((((


nice signature btw!!!
« Last Edit: December 31, 1969, 04:00:00 PM by ' »

Offline cnrcpla

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cr125 idle problem
« Reply #8 on: June 02, 2012, 09:26:42 PM »
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nice signature btw!!!
Thanks  ;D 

To see if its an air leak, try loosening all the clamps, make sure the carb is right where it needs to be so that both ends are in a rubber connection, and then tighten the clamps again. Also, make sure the clamps are tightening down between the metal of the carb and and the rubber, not off of it. And see if there is a tear or hole in the rubber, that would do it to. Good luck finding this issue out  :)
« Last Edit: December 31, 1969, 04:00:00 PM by ' »

Offline ford832

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cr125 idle problem
« Reply #9 on: June 02, 2012, 10:17:57 PM »
Is your slide bottoming properly in the carb?

^^^This.It's not uncommon to have the cable housing slip out of the top of the carb and hook on the flange when you take it off(or depending on the carb,have the threaded piece unscrewed).This pulls up on the cable and will do what you describe.Pull back the rubber boot at the top of the carb and look.Also ck that your cable is routed properly and not pulling on it.
« Last Edit: December 31, 1969, 04:00:00 PM by ' »
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Offline 151russellcr125

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cr125 idle problem
« Reply #10 on: June 02, 2012, 10:43:32 PM »
ok i got it... my jet needle wasnt going all the way down so i stretched the cable a little bit.. THX FOR THE HELP ANYWAY!!!  :D  :P  ;D
« Last Edit: December 31, 1969, 04:00:00 PM by ' »

Offline CR BUCKET

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cr125 idle problem
« Reply #11 on: July 10, 2012, 11:54:34 PM »
Hi,new to the forum from downunder.
I have a 1991 Honda CR 125 which idles high every now and then.
Reading the above posts i noticed mention of the slide not going all the way down could cause high idle.
I took my slide out and noticed there is some sort of coating (teflon?)which looks like it could be from standard.
It is worn completely off in some sections.
Could this be causing the slide to stick sometimes ?
Cheers,
Greg
« Last Edit: December 31, 1969, 04:00:00 PM by ' »