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250F idling funny

Joined
Mar 18, 2001
Messages
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#1
Hey hey, My 250f is idling all over the place. Sometimes it idles high, and a blip of the throttle normally settles the idle back down to normal.

Anyone experiencing anything similar?
Or maybe you know why this is happening?

Cheers
Simmo
 
Joined
Nov 14, 1999
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#2
Sticky slide maybe? Do you have a enough play in the throttle and are the cables clean and smooth?
 

steve125

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Joined
Oct 19, 2000
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#3
Sounds like a lean condition to me. click on this for an excellent jetting article. www.lifenet.com/brm/carbkei.htm Read the fuel screw paragraph and then try adjusting your fuel screw.Make sure you note where the factory set your fuel screw. Each carb is flowed by the factory and the settings can be different from one to another.

[This message has been edited by steve125 (edited 03-25-2001).]
 
Joined
Mar 18, 2001
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#4
That article is quite informative and useful, thanks. It sometimes 'hunts' at idle so I think the lean condition a sure bet. No nothing seams to be sticking, I checked all that 1st.

Cheers
Simmo
 
Joined
Apr 23, 2000
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#5
Mine does the same, I have tried the fuel srew in and out and on my first bike it made a big difference I liked it around 2.00-- 1.75 depending on air temp and was happy. BUTT the one thing that can happen on these carbs is the air inlets can plug with air filter oil or dirt VERY easly ( hence the flap in the air boot) I SHOULD HAVE KNOWN?
When ajusting the air screw between those areas does not work the carb is more then likely dirty P.S. My freinds have came that way.
 
- a d v e r t i s e m e n t -

Joined
Mar 18, 2001
Messages
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#7
I have wound thee ffuel srew out a turn, its better but still not right??????

maybe it needs jetting work????

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Joined
Apr 3, 2001
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#8
My brand new, never ridden YZ250F has been doing the same thing in my driveway during break-in runs. It runs like a V8 with a radical cam at idle. Do other 250f's idle super smoothly, or are they a little rough?

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- a d v e r t i s e m e n t -