Throttle sticking on 1929 640

Posted by LouCiro On 2020/1/19 17:07:05

Debugging a 1929 640 Roadster.
Throttle does not return to idle and sticks at high speed.
Appears the 10" spring from the Carb throttle shaft to the car frame is not strong enough to return shaft to idle position. Does anyone know what the specifications for this spring are? #'s of force , material, Packard part #.
Any help would be appreciated.
Thanks,
Lou