Chiefdan wrote:
Today I had some time to tear into things on the Packard. I rigged a fitting to adapt my vacuum gauge to the rubber inlet hose on the fuel pump. Then put on a lawnmower gas tank to gravity feed into the carburetor.
I came up with 5# of vacuum at the fuel pump inlet at an idle. Decided that the fuel pump was OK so put everything back together. It ran fine!
The only thing I did as suggested was tighten the steel line fitting to the rubber fuel pump hose harder. Viola, The glass bowl on the filter stays full and I put 50 miles on the car today with no problems. Thanks so much to the guys who contributed information. Dan