Thread: Jetting Woes...
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Old September 30th, 2010, 11:52 AM   #18
dubojr1
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Name: Jason
Location: Jacksonville, Florida
Join Date: May 2010

Motorcycle(s): 09 Ninja 250R SE, 07 Honda CRF230F, 06 Honda CRF150F

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Quote:
Originally Posted by Jerkson View Post
I only saw 1 person with the airbox removed and a full exhaust (same one too) that had the 38 pilots still in. Then again he had his pilot screws at 3 turns out each. Everyone else (who even listed their pilot jet size) had 40.

I dont think there is enough vacuum in this system to cause a leak at idle if all the hoses are connected, which they are. The clamps are on all hoses. Spraying starter-fluid around the hoses caused no change in idle so I'm ruling out vac-leaks for now.
My airbox is removed and currently I am running the #40 pilot to try to eliminate a stutter at 1/8-1/4 throttle. The apparent fix for the stutter was moving to the 4th clip position and now the idle circuit seems a little boggy. I will be switching back to the #38 pilot first chance I get and then possibly going down to 110 main to lean out the whole RPM range a bit. Good luck and please report back.
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