Originally Posted by
Joe1199
the strange thing is the high speed needle seems to have little or no effect, the engine starts easily but seems to misfire a lot on cylinders #2 and #3
I've read a lot that "the low speed needle is dominant", does this mean using it to get rid of mid-high range running problems?
After break in you want to set the high speed needle to peak rpm at full throttle; then go to low throttle and set the low speed needle as lean as possible while still being able to accelerate quickly. Then go back to high speed needle and set it as rich as possible that still gives you good rpms.