Maintenance & Technical > KX500 Original
jetting for 6200-10k above sea level.
bjohn07:
so ive used the search option, got on team green charts and the fmf charts, everything says for sea level to 3k above. im in colorado springs most places around here are 6200-6500 ft. some of the trails i wanna go ride out in canon city can get up to 10k. im just lookin for a base point for around 6500 and i can go from there. the bike has a fmf fatty pipe, smoking normal as far as i can tell but its lagging at top end, and the bottom end feels weak, very weak. any guys from around the same elevation care to share there carb settings. main jet, needle and clip setting, and the pilot jet. im gonna pull the plug and carb to inspect and see what kind of jets are in it now, guy i got it from said it was mainly used in utah and was not jetted for this elevation.
bjohn07:
pulled out the carb. main jet is 162, pilot is 58 and the needle clip was on the 2nd from the top notch? can anyone help me out here.
according to the fmf site (since im running there fatty pipe) my main should be 168 pilot is 60 and clip should be on the 3rd. and thats for 0-1500ft altitude. :-o gonna try to fatten up the jets and see how it does.
bjohn07:
maybe i got this wrong. im from south texas. sea level so im not used to this jetting for elevation stuff. but i might have to go lean since at higher elevation less 02?
Foxx4Beaver:
You should really run a compression test 1st,since you say it's feeling quite weak.You can jet and re-jet all you want,but if your top-end is weak,you're just gonna be pissing directly into the wind :cry:.
I've never run at 5k+ elevation,so I really can't say what's a "good" setting,but in my opinion,you're already on the leaner side,with the exception of the pilot.
Just to avoid running the risk of melting the top-end,I would drop the clip into the third(middle) position,and try it.You'll know pretty quickly if it's better or worse.It's better to go a little fatter to start if you're not sure,so you don't melt it.
bjohn07:
--- Quote from: Foxx4Beaver on January 26, 2013, 10:29:59 PM ---You should really run a compression test 1st,since you say it's feeling quite weak.You can jet and re-jet all you want,but if your top-end is weak,you're just gonna be pissing directly into the wind :cry:.
I've never run at 5k+ elevation,so I really can't say what's a "good" setting,but in my opinion,you're already on the leaner side,with the exception of the pilot.
Just to avoid running the risk of melting the top-end,I would drop the clip into the third(middle) position,and try it.You'll know pretty quickly if it's better or worse.It's better to go a little fatter to start if you're not sure,so you don't melt it.
--- End quote ---
ok. sounds like a plan. what kinda psi should i be reading. also it was rich. i pulled the plug and it is just soaked in fuel and oil.
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