Re: Fuel system

Posted by DavidPackard On 2023/2/7 18:59:25

Kenken, I invite you to review the parts catalog, especially the ‘plates’ section, which contains drawings/photos of the components and sub-assemblies of your car. The parts catalog artwork was also pasted to the previous thread that Jerome included. You’ll want to look at plate number 86 as a guide . . . that’s likely the source of HH56 diagram. It appears that your particular fuel pump has been re-assembled in a configuration different than original. Note that both the upper section and lower section may be installed on the center section in multiple clocking positions.

The lower port with the pulsation damper (aka weird cylinder/bulb) is definitely the gasoline outlet . . . 180 degrees opposite on the lower casting is the gasoline outlet. Your pump gasoline inlet fitting appears to be pointed directly toward the engine block. I’m not sure that will ever work! I have limited experience on this subject, but I’ve only seen the lower housing ports aligned with the block.

For a while Packard used threaded fittings and steel lines for the vacuum pump (upper section). Later they transitioned to rubber tubing nipples. Your pump is definitely designed for threaded fittings. To be sure which fitting is which stroke the pump while placing a finger over one of the upper ports. The port that has a suction is attached to the wiper motor, while the other port is attached to the intake manifold. If the upper vacuum pump doesn’t work connect the wiper motor to the intake manifold. As Jerome said you can defer the connection of the vacuum section until the engine is running correctly.

dp