The motor I have is a 50273C I am not getting fuel to the upper cylinder. I have checked for spark and it jumps a 7/16 gap with no problem. Compression is 115ish on both cylinders. When I rev the engine I can clearly see fuel spraying out of the venturi on the carburetor. When I place my hand over the top carburetor i have suction and fuel will pour out of the throat when I take my hand off. I put new plugs in the motor per specs and gapped at .40 when I removed the plugs I noticed the bottom plug is sooty being that both mixture screws are 1.5 turns out. The top plug is as clean as the day it was installed. I replaced the fuel pump as well but have to pump the bulb to keep the engine running. Does anyone have an idea what can cause this issue? The motor was given to me and has had this issue since I recieved it.

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