I seriously doubt your cam lobe is wiped.
As has been noted many times on this forum, the mechanical fuel pumps available today are virtually ALL junk straight out of the overseas slave labor factories. Numerous fellow Stovebolters have experienced the same problem you're facing.
I experienced the identical problem you have and also thought my cam lobe was wiped. Two brand new pumps would not work. One failed to pump a drop of gas straight out of the box.
The solution is/was to locate an original mechanical pump or a reman pump from at least 30 years ago and either rebuild it yourself or have it rebuilt by a company like Then & Now Automotive.
My problem was solved as soon as I installed the rebuilt pump.
I don't know if the new pumps can even be fixed. In my case, it was obvious that on the first pump, the pump arm was assembled incorrectly. In other cases, the valves are installed wrong or not staked in position, the diaphragms are not made correctly and don't create enough suction or whatever. In some cases I think the pump arm may not have a long enough reach to activate the diaphragm fully.
Last edited by Phak1; 09/19/2023 12:00 PM. Reason: By Moderator, removed offensive language
