That is a mechanical pump. If the pump fails, the diaphragm usually fails and there is fuel in the overflow tube which runs to the carb.........another possible source- just not as likely as a carb issue.
Two 14" 5 lug S5 wheels with ST205/75R14 Kenda Loadstar radials $349
Two 14" 5 lug S5 wheels with ST215/75R14 Kenda Loadstar radials $389
Two 15" 5 lug S5 wheels with ST205/75R15 Kenda Loadstar radials $409
Mounted, balanced and delivered.
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CARBURETOR REBUILDING - $199
Parts, labor and return shipping included
2 LED 6" BRAKE LIGHTS DELIVERED $32