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Enduro Intake/Carburetion - 2 stroke Jetting, Reeds, Air Filters, etc. |
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#1
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Wierd deal
So the last couple of rides on my 01 300 it has not wanted to clean out close to wot I have rode this bike here for 3 years with no issues at all Pulled carb to verify jets 42 p 170 m 2 turns out on as 7 slide I could have sworn i changed needle years ago to a cck But it had a n1ee in it We are 3500 ft with corrected air close to 6000' lookd thru jetting data base and that is real close Had a spare CEK needle and stuck it in at ctr clip and it seems alot better We are in a horrible drought and way hottter than normal also Any thoughts
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#2
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i'm thinking the needle that was in there,has been banging around enough to wear down,causing a rich condition. my 01 carb was one of the first anyone had heard of that had worn the jet needle oval and suggested jetting was way to rich across the board. jet the bike to work the way you want, and forget what #s the jets and needles are. once the pwk is a few years old, you have to go freelance/and jet to what the engine wants.
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#3
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Change the main jet. They wear out over time as does the needle. I would use the same size for testing purposes. good luck.
jz |
#4
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thanks guys.. with the cek needle it runs great.. i had dropped the main to a 165 but did not like the plug color.. with the cek and the 170 back in the plug looks great.. just wondering why the change..
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#5
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If it is very hot out, hotter than when you normally ride, the bike is loading up with fuel at the lower rpm range when you are trail riding. When you go to "get on it", the engine tries to burn all of that excess fuel at once. This is when it cannot clean itself out quickly.
The K in CEK is a very rich straight diameter, one step richer than even the stock needle diameter. If you like the C taper, try going to a CEM, CEN, or even a CEP diameter. The larger diameter should keep it from loading up in the lower throttle range. I would start with a CEP, 38 pilot, 165 main if you are that high up.
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'10 EC300 -- very happy |
#6
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i would think you would need a richer pilot to compensate for the large straight section cem/cen/cep...
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07 ec300 was 00 xc200 now a 00 xc300. now parting out. 99 ec300 (now a pile of parts which are for sale) Stainless Cycle - Motorcycle Bolt Kits www.stainlesscycle.com |
#7
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interesting thoughts... i came across a dd_ something needle this week in my stuff also.. i will get the magnifing glass out to make sure what it is also..
hope to get to ride it this weekend and report back.. we had a cool front come thru this week and still broke a high temp record.. 103 forcast saturday... |
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