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One day my 1950 Olds decided not to start. I diagnosed the problem as a fuel pump problem. I get gas at the inlet to the pump, but nothing up at the carburetor inlet. I pulled the pump and bench checked and it seemed fine. After reinstalling it, the problem remained. I tried another pump with the same results. Frustrated I install an electric fuel pump and the car runs fine, but the pump makes a high pitched wining noise. I'd like to go back to the original pump if possible.
Is there an eccentric on the crankshaft that drives the pump. Does anyone have a diagram on how the pump arm is actuated?
TIA
From a internet search. Actuation lever goes under the eccentric. If you decide to rebuild your pump make sure you obtain one of the new kits containing materials compatible with the pump gasoline of today.
You should be able to see a shiny spot on the actuating lever tong, make sure that shiny spot is riding on the correct side of the cam lobe or nothing is going to happen. Usually you can feel the pump take a load(depress) as you insert it. Once you do it, correct, you will recognize what I'm what I'm talking about.. Tedd
oldcutlass, I bench tested the fuel pump and it seemed fine. I also installed another one and it didn't work either. I'm wondering if the eccentric fell off the cam. If so, it probably would make quite a racket, which it didn't.
The photos posted by coldwar show that it is bolted on with three bolts. I won't be able to look at mine until the end of the month because I'm out of town.
From a internet search. Actuation lever goes under the eccentric. If you decide to rebuild your pump make sure you obtain one of the new kits containing materials compatible with the pump gasoline of today.
March 2nd, 2022, 08:40 PM
