Henrik wrote on 04/29/14 at 13:02:40:One thing that i have been thinking of is this, do the jets activates in order so that at full throttle they are all engaged meaning that the pilot, needle hight, airscrew are all affecting the main jet?
The pilot jet and pilot mixture screw are only active when the throttle is near closed. This is due to the pilot circuit opens near the butterfly valve. Once the BV is open enough to be on the other side of the BV, not much air/fuel is going to flow thru it.
The needle jet regulates the main from closed to full open throttle.
change the needle height and you open the main sooner.
Pages: 
