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Enduro Intake/Carburetion - 2 stroke Jetting, Reeds, Air Filters, etc.

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Old 02-01-2011, 06:33 AM
taku60 taku60 is offline
Join Date: Jan 2011
Posts: 1
Default jetting for ec250 2011 six days

hello how are you , I'm having problems with the jetting of my gasgas, the problem is that too much oil out the muffler and every time I ride need to change a spark plug. pilot jet#40 and main jet #162 and the stock needle, the premix of I use is 2.25 oz per gallon

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Old 02-01-2011, 06:42 AM
Silver Silver is offline
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Join Date: Jul 2007
Posts: 194
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Old 02-01-2011, 11:01 PM
matt_tidball matt_tidball is offline
Join Date: Nov 2010
Location: Peoria, Az
Posts: 32

I had The same problem on my 2011 300 six days. Apperently GG changed carbs this year from the Air Striker 1 to the 2 model, and used the same jetting as the 1. I had to drop a my pilot from 42 to 38 and main from 175 to 170, lower the needle to clip one. It still wouldn't idle and plug went lean at 1/4 throttle. the ticket that made my bike awesome was change the needle from a N1ef to a n3eh in position 3 ( middle clip). I ride at 2000 to 3500 ft regularly,and 55 to 75 degrees. so far so good. the plug is now carmel color and power is awesome from bottom to top. I also went from stock hitting reserve at 35 miles to now over 55 miles. I don't know what needle the 250 has but I would guess it might have the same one. I got the needle from KTM. Don't remember the part #. The needle that came in the bike had the wrong taper was the main problem in my opinion. I will drop the needle one clip and main to 168 when it gets hot here in AZ.
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