Maintenance & Technical > KX500 Original

new to the site need help.

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cobbs:
hey polar-bus my bike runs on 32:1 pre mix with a 170 main AT 5500ft never fouled a plug but I'm not afraid to ride my bike hard so that's probably why, but isn't that crazy that my bike runs like an animal with a 170 at 5500ft most people say that's to rich but my bikes performance doesn't lie its running amazing. That's crazy that someone at sea level would need to lean their bike up from a 168 also if its doing that past quarter throttle that's all in the needle and main jet, the pilot jet shouldn't effect it  at higher rpms if its got good low end

Polar-Bus:

--- Quote from: dirtrider100 on April 18, 2012, 10:20:52 AM ---checked the power valves today took that rubber boot off and the pipe off and moved the valve back and fourth and looks clean and working. put a new plug in and the old plug looked wet like its running to rich and ran it up and down my street and still the same bottem end is good but when you get to half thorttel its feels loaded up like it whont clear out and the engine sounds deep i orderd a 55 pilot jet see what that dose i also live in sothern california

--- End quote ---

There is a possibility the kips can be incorrectly timed. This will cause a "soft" midrange, but your saying the engine is loading up, do a compression test, you need to be around 150 psi .

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