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

I noted that my accelerator pump is not being actuated by the linkage, which is a two-piece pivot tied together by a tension spring. It has been a few years since I disassembled the carb, and I vagueley remember seeing/understanding why it was arranged this way. The bottom line is that my accelerator pump does not appear to be working by the linkage. I can manually push it down and I get a squirt of fuel in the venturi.
Can someone explain the logic of this arrangement, and perhaps what may be wrong with my carb.
(I should try to post a picture to help with the quesion - I need to figure out how to post a picture)

The pivoting linkage with the underspring was designed so that if the accelerator pump would bottom out in the base of it's well in the carburetor before the throttle linkage had bottomed out on the floor boards, it extra pressure would actuate the pivoting linkage, preventing the pump from trying to decend further beyond it's limit, thus avoiding damage to the accelerator pump, links or carburetor casting.

Sounds perhaps like you've got the pivoting link installed upside down. The little coil spring goes on the underside, nearest to the float bowl cover.