Otto, my pump is stock mechanical and new. I don’t have a pressure gauge but the bowl holds pressure and fuel squirts vigorously when the fuel line or carb filter head is loosened. I can visualize a sticking needle to be the cause and will check it next. When I pull the carb I’ll be able to see in the manifold.

Jerry, how would you check the float level? A height gauge would be ideal but there’s no way to manipulate a caliper to contact the machined surface and the float.

Thanks to all for your inputs. We have company coming today but I’ll be back on it tomorrow!


Mike Barnes
1950 GMC 1-ton pickup