I just tried starting my stock '55 292 with ECJ 9510G Holley "teapot." It had been running perfectly when i shut it down a year ago. It started immediately and ran perfectly for a few seconds on the gas prime i put into the carb. However, when the fuel pump kicked in i could see spurts of gas coming out the top if the carb, just under the air-cleaner bolt. It ran very rough for a minute or so and then died. Tried it again with the same results.

I'm hoping there is a simple fix for this.  Any suggestions?

Steve