Maintenance & Technical > KX500 Original
Jetting!!! Again and again and again!
umberto:
--- Quote from: Danger4u2 on November 17, 2015, 12:17:48 PM ---Plug chop. I think there's enough room in the field to do this if you want.
I'll go get my 2004 carb. give me a minute.
http://kawtriple.com/mraxl/carb/plugchop.htm
https://www.youtube.com/watch?v=hF3tGEFQ1ZA
Picture doesn't come out clear.
G250 AR10
--- End quote ---
I will take you up on that offer. I need a better plug reading for sure.
umberto:
I looked in my manual for the engine, and the stock settings are:
Main - 175
Pilot - 62
Needle - R1369N-3 in the third groove from the top
Air Screw - 1 1/2
Do you think I should start with the FMF settings, stock settings, or the current setting when I do the more in depth plug reading? The current settings were for the engine with stock bore, 89 and up sleeve, and no KIPS valves. The motor felt about the same in that as bought configuration as it does now, lazy and very reluctant to rev.
Thank you!
sandblaster:
I wish I knew more about your needle.
It is the correct needle for a 88 but your carb is a 90-93 which should be a N82R or similar.
I don't know how it would be effected with that 88 needle.
Perhaps someone here would know?
I'm curious, have you done a leak down test (Not a compression test) of that engine after you put the new top end on?
If not I would highly encourage you to do so.
Also, how did your reeds look?
If the reed looks good, with the seat off, start the bike and rev the throttle.
As you rev it up, put your hand over the air filter.
Can you feel air pushing back through the filter?
Is the filter wet with fuel?
If so, then it's time for some new reed pedals.
umberto:
I replaced the reeds with new Boyesen stock reeds when I was having issues with the motor the first time. I also have a VForce 2 block that I can mod if you think that would help.
The needle that is in the carb is a R1469M, the one listed in the manual is a R1369N. Is a larger number indicative of a richer or leaner needle?
I found a stock 88 carb on eBay, do you think it would be better to start over or should I try to mess with this one some more? I'm worried it might have been "modified" like the cylinder was.
dave916:
--- Quote from: umberto on November 18, 2015, 03:51:35 AM ---I replaced the reeds with new Boyesen stock reeds when I was having issues with the motor the first time. I also have a VForce 2 block that I can mod if you think that would help.
The needle that is in the carb is a R1469M, the one listed in the manual is a R1369N. Is a larger number indicative of a richer or leaner needle?
I found a stock 88 carb on eBay, do you think it would be better to start over or should I try to mess with this one some more? I'm worried it might have been "modified" like the cylinder was.
--- End quote ---
Try moving the needle clip position with the 1469 , Try the Top position {leanest] to see if it improves things,
if that impovement things i would tryA R1369N clip 3 and then leak down test if its still not right
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