Year & Bike Model = 2009 CR125
Carb = PWK 36mm
Pipe & Silencer = FMF & turbine core II silencer
Other engine mods = none
Premix ratio & fuel type = 40:1 Torco GP7 w/ pump premium
Temperature range (deg F) = 55-60
Elevation (feet) = Sea level - 1000-2000ft
Main jet = 185
Pilot jet = 48
Needle = N3EJ
Clip position = 3
Air screw setting = 2.0
Slide = #6
Conclusions/Results = Fat on the pilot and then cleans up and runs hard and clean. It feels perfect once past the pilot circuit, but I cannot get any color on the plug. Was first using N7NW needle #3 clip then #4 clip, but could not get rid of lean feeling bog before power kicked in. Tried the N3EJ #3 clip and felt an immediate improvement of the bog. Still cannot get any color on the plug doing a WOT plug chop (BR9ES) and I dont have anything bigger than a 185mj. Bike shows no signs of an air leak, but still cant seem to get enough gas into the cylinder.
Power (once past the pilot circuit) is superb and razor sharp, but lack of color on the plug has me nervous. Will keep testing...
Carb = PWK 36mm
Pipe & Silencer = FMF & turbine core II silencer
Other engine mods = none
Premix ratio & fuel type = 40:1 Torco GP7 w/ pump premium
Temperature range (deg F) = 55-60
Elevation (feet) = Sea level - 1000-2000ft
Main jet = 185
Pilot jet = 48
Needle = N3EJ
Clip position = 3
Air screw setting = 2.0
Slide = #6
Conclusions/Results = Fat on the pilot and then cleans up and runs hard and clean. It feels perfect once past the pilot circuit, but I cannot get any color on the plug. Was first using N7NW needle #3 clip then #4 clip, but could not get rid of lean feeling bog before power kicked in. Tried the N3EJ #3 clip and felt an immediate improvement of the bog. Still cannot get any color on the plug doing a WOT plug chop (BR9ES) and I dont have anything bigger than a 185mj. Bike shows no signs of an air leak, but still cant seem to get enough gas into the cylinder.
Power (once past the pilot circuit) is superb and razor sharp, but lack of color on the plug has me nervous. Will keep testing...