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Old 02-18-2019, 12:23 PM
viper77765 viper77765 is offline
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Default First day green laning

Hi all, I had my first ever day green laning and although it was a hard and very long first ride it was extremely fun.

However my bike was a little off. I had some coughing and spluttering. Pulling off was powerful but soon became flat and a little flat. I asked an other rider to ride it and he also said something doesn't feel right.

It is a gas gas ec250, 1999 running std sprocket size. 14 front and 48 rear. The carb has in 170 main and 38 pilot.
I was thinking maybe jet size.
What do you guys think?


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Old 02-18-2019, 12:39 PM
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Quote:
Originally Posted by viper77765 View Post
Hi all, I had my first ever day green laning and although it was a hard and very long first ride it was extremely fun.

However my bike was a little off. I had some coughing and spluttering. Pulling off was powerful but soon became flat and a little flat. I asked an other rider to ride it and he also said something doesn't feel right.

It is a gas gas ec250, 1999 running std sprocket size. 14 front and 48 rear. The carb has in 170 main and 38 pilot.
I was thinking maybe jet size.
What do you guys think?
The problem is usually the needle selection - most use a better needle in combination with a richer pilot.

Typically - you want to be 178 main and 42-ish pilot with a yamaha or suzuki needle. This may vary from country to country due to differing fuel characteristics. Are you running a good premium fuel?

Also, given the age of the bike - it wouldn't hurt to check the reeds and replace them if needed.



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Old 02-18-2019, 01:08 PM
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Here is an older post that will get you going in the right direction...

http://www.gasgasrider.org/forum/showthread.php?t=15208



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Old 02-18-2019, 04:48 PM
viper77765 viper77765 is offline
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Thanks matey I will check the reeds tomorrow and order a better needle. I will get a 178 and a 42 as well. Like I say I am new to the whole off road and 2 stroke scene.

Last edited by viper77765; 02-19-2019 at 11:05 AM.
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Old 02-19-2019, 10:51 AM
viper77765 viper77765 is offline
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Today I fit a 42 pilot and a 178 main with the needle on position 3.
It ran awful. I then tried position 2 on the needle and the improvement was incredable. I thought I would try position 1 on the needle and response was massive. Acceleration was great. So happy with the improvement. However I can not sustain idle. Even when warm and idle screw is quite far in it still doesn't seem to want to idle without cutting out.
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