Well, that was a let down. Six volt systems suck! You need to have the tune up set perfectly and everything like new with the fuel and ignition.
What a classic car though. I knew an elderly gentleman when I was young who had a car similar to that car. Also had a straight eight. That car was so long, solid steel wheels like that one, long hood and front fenders and it was a roadster, two doors and just the one seat. It might have had the rumble seat. Back then he was offered lots of money for it but he wouldn't sell it. It was completely restored. I often wonder what happened to it.