Maintenance & Technical > KX500 Original
Jetting!!! Again and again and again!
Friar-Tuck:
500,
There's a couple things right off that might be affecting your jetting.
Air filter clean & Oiled properly.
Float level set correctly.
Is the choke working O.K.
Crank seal drawing in tranny fluid.
Has the Carb Body been bored out.
Has anyone modified the main jet or is it a real Keihin.
Has the needle been modified.
Are the reeds in good shape , if they are not lying flat (Closed) there could be a tendancy for air to actually flow back and forth through the carb and pick up additional fuel.
Has the cylinder been bored out to a larger size.
Well, Right off this will give us some more info to track down this buggar...
Tuck\o/
500freak:
i did a full rebuild on the engine about 10 hrs ago, so i know the seals are good. the carb isnt bored and the float setting is fine. the choke works fine, when you pull it when its warm it revs then loads up. it is bored to 86.5mm and ported. the reeds are new boysen two stage. it had the stock carb on it running 1 seize bigger main jet. i got the keihin off of a cr and had to adjust the needle leaner with smaller jetting, and it runs rich.... the plug after running is brown and has some oil left on it.
Friar-Tuck:
500,
Thank you for a bit more info. :-)
The Cr's come with a Keihin PJ, is that the model your running on the bike?
(the jet and needles are interchangeable w/the PWK 39.5,38,38 Air Stryker and PJ)
The PJ's idle circuit it tied in to the choke. Do you rotate the choke knob for the Idle adjustment?
Tuck\o/
RM_Rider14:
Anyone live in Colorado or ride at these elevations? I am trying to find out what your jetting is if you do. I have my YZ 250 dialed in for elevation and I'd like to get the KX 500 too.
TIA-
500freak:
no the choke doesnt adjust idle.
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