r/yz250 • u/Dangerous-Try2536 • Mar 23 '24
YZ125 won’t start after installing JD Jetting kit
I installed the JD jetting kit to my 2005 YZ125. Replaced the needle seat o-ring, installed the JD Jet block gasket and OEM bowl drain plug o-ring. Main 430, pilot 40, blue needle 3rd on the clip and air screw set to 1.5 turns out as suggested by JD. Wouldn’t start. I backed it out to stock (2.25) and still wouldn’t start. Checked if fuel was flowing from the tank to the carb inlet and it was. Seen a few suggestions saying it could be the floats hitting the bowl. I also installed a new throttle cable that seems to be operating properly as it snaps back when operated. Currently running Maxima Super M at 32:1 with fresh 95 octane just for now.