What the gas in the bottom of the tank? probably 15 years it wasn't much though not even a quart. I should have dropped and or replaced the tank I'm thinking. It sees to start and run ok now even with the pre winter cold we've been having . as long as I can get the carb primed she fires off. keep in mind I added a thermal spacer, and also ajusted it as per edelbrock lean best idle instructions.