Maintenance & Technical > KX250 / KX125
Getting the jet needle out of the throttle valve?
bigbellybob:
looks lean to me like melt the piston lean. its hard to imposable to get a reading on an old plug. it could look good as the extremely rich darkness is getting burn off but be way lean.
take a look at this before you ride it any more. it has a good plug chart at the bottom of the page.
http://www.bcchapel.org/pages/0003/pg11.htm
this is a good how to on 2t jetting
http://www.yellowdogracing.com/techstuff.htm
mustangfury:
this is a new plug. i only rode with it for about 15 minutes.
bigbellybob:
wite on the plug = hole in the piston.
your plug should not be wite at all.
mustangfury:
ok i put the 52 pilot jet back in and the color of the plug is much nicer again. It is that nice mocha brown on the electrode after riding around at 1/4 -1/2 throttle, but the plug is also very wet still. I am going to mess with the mid range clip position stuff now. I'll let you know how it goes.
Friar-Tuck:
Stang,
The fuel you see when the bike is leaning over is fuel running out your overflow. The overflow is the little brass tube in the bowl of your carb, so yes, it will pour out quickly as there is no restriction on it.
The way you are describing the overflow, I would also agree your float level is too high.
The correct height will be in your manual. This could be contributing to this,
--- Quote ---The bike ran the best in the mid range when the clip was as rich as possible. Off the start was still bogging and mushy sounding. Off the start the bike ran the best when the clip was in the middle position.
--- End quote ---
--- Quote ---i put the 52 pilot jet back in and the color of the plug is much nicer again. It is that nice mocha brown on the electrode after riding around at 1/4 -1/2 throttle, but the plug is also very wet still.
--- End quote ---
Riding around at 1/2 to 1/4 will tend to load up the engine & plug after a while, and that may be why you found the plug to be wet again.
If the bike is running better with the choke on she needs more fuel.
Tuck\o/
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