This is the big OS, BGX 2.2ci glow thumper. When horizontal or vertical mounted, it normally primes with a good choke 3 to 5 turns, and then starts easy with a single backflip.

Yes, I can get my thumb over the carb to choke, but because it's inverted, when I remove my thumb, the primed fuel runs right down and out of the carb. The fuel is not being drawn up and into the crankcase and cylinder.

Any good ideas on how to get the prime to get sucked up and stay in the cylinder ?

... zak