Packard Forum Index » Pre-War (1899-1942)

I am having difficulty restarting my 1941 110 packard after 50 yrs storage. I have spark and engine turns over fine; I rebuilt the carburetor with a kit but find only one needle screw adjustment (for idle) - I am used to carburetors having 2 needle adjustments (idle and load). Is there a second adjustment internal to the carburetor or are all the "load" adjustments made externally at the throttle shaft?

Thank you,
Gene

2 needle values is for two of four barrel carburetors but never on a single barrel! Be sure of the obvious: to use only clean, fresh gasoline and, if using the stock tank, that it and all the lines have been thoroughly flushed. Also replace the rubber hose that connects the fuel pump to the chassis feed AND rebuild the pump itself. The old rubber parts can't handle modern fuel. The service/shop manual should be here in the Literature Archive.

The main jet adjustment on many mid to late 1930s cars is automatic, typically controlled by a stepped or tapered metering rod located in the jet orifice. The metering rod is often linked mechanically to the throttle shaft or it may be regulated by a vacuum piston or diaphragm.