Re: 1957 Johnson 10 HP

[mnmarty]

I changed the gas line from the pump to the carb just in case and the line from the motor to the pump. Slightly better but will still die with no constant pumping. I’ve thought about another tank. If the tank or bulb was restricting would the bulb still be hard? I would assume it would get soft? I have another old line and bulb I could switch out. I don’t have another tank, though.
I did try to start the motor and it ran for 10 sec while I had my finger over the line from the motor that drives the pump. Air was moving. I didn’t probe the barb fitting on the motor when I changed the line. I guess I could do that.
I know these modifications may not be authentic but it worked for years. I can’t figure out what would have changed.