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Carter carburetor question


Guest riderjdv

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Guest riderjdv

On my 53 Pontiac Chief the leather cup on the accelerator pump in the Carter WCD is dried up and I bought a new one. The guy who sold it to me said I should soak it in motor oil to expand the leather. Another guy said just to shoot it with a little silicone spray. Does anyone know the what it actually says in the rebuild guide for priming the pump?

Thanks

Jim

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I would install it dry. My reason is that if you soak it the plunger will swell and make it more difficult to get into the sleeve( chamber). As soon as the gas hits the oil or silicone, those elements will dilute and be washed into the carb anyway. Silicone sprayed into the chamber will help slide the leather in, that's all.

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The leather plunger should be lightly coated with a light machine oil (NOT motor oil). Something like sewing machine oil, 3 n 1 oil, etc.

This light coating will protect the plunger from wear sliding into the dry pump well until the carburetor is installed and filled with fuel.

50 years ago, many leather pumps came sealed oiled in their own package in the rebuilding kit.

Jon.

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