You said, "I tested the fuel solenoid WITH THE TANK VALVE CRACKED OPEN and the fuel hose disconnected completely from the regulator.....liquid fuel came out...... "
Are you meaning that you disconnected the fuel vapor hose that leads from regulator to the mixer? and liquid fuel pours out of the regulator at that hose nipple on the regulator?
Tell us WHICH Impco regulator and mixer you installed.
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