Thanks for the quick reply! I did install the fat gasket at the bottom of the high speed jet and the choke is working correctly. Additionally to further troubleshoot this I bypassed the fuel filter and had gas going straight into the bottom of the carb. I removed the air silencer and sprayed carb cleaner down the throat but it still wouldn’t run longer than 1.5 seconds.
I have a spare carburetor for this motor that I rebuilt as well that I also tried on the motor yesterday and the motor runs exactly the same. 1.5 seconds then shuts off. The top air passageways of both seem to be debris free. When off of the motor to test this I’ve removed the low speed needle and using my mouth blown air into the throat while blocking off the opposite side of the throat with my hand (as well as the other orifices). Air comes out the front of the low speed passageway pretty well and without any particulate. It’s really got me stumped
