Re: 1929 6-33 fuel issue

Posted by TxGoat On 2023/11/25 20:06:54

I doubt the old pump can be repaired.
Electric pumps are available, but they can be problematic on early cars. A vacuum tank system as originally equipped would deliver gasoline to the carburetor at a few ounces to perhaps a pound of pressure per square inch. Fuel pumps used on later Packards, such as mid 1930's models, typically delivered fuel at 3 to 4 pounds per square inch. If you used a modern, LOW PRESSURE electric pump with the early carburetor, a fuel pressure regulator would probably be needed to reduce the fuel pressure from around 4 to 7 pounds per square inch, or more, down to about 1 pound per square inch. In the interest of keeping the car original and complete, I'd try to obtain the correct vacuum tank system. If that proves to be impractical, a 6 volt, low pressure electric pump and regulator can be obtained, or a gravity tank and bypass system could be rigged up to simulate the original vacuum tank system.