Simmo

Member
Mar 18, 2001
17
0
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
 

steve125

LIFETIME SPONSOR
Oct 19, 2000
1,252
0
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).]
 

Simmo

Member
Mar 18, 2001
17
0
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
 

vern#19

Member
Apr 23, 2000
126
0
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.
 

Simmo

Member
Mar 18, 2001
17
0
I have wound thee ffuel srew out a turn, its better but still not right??????

maybe it needs jetting work????

------------------
 

TriPower

Member
Apr 3, 2001
30
0
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?

------------------
 
Top Bottom