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Carburetor
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Rebuilding Carburetor
- Materials:
- Replacement washers
- Replacement float needle valve
- Rebuilding
- Because our car is a Packard, there’s plenty of fresh parts available.
- Carburetor rebuild kits are available for many classic cars.
- Replace all the washers in the carburetor. We put a little drop of oil on ours before we thread them in. Always be careful when you’re threading these really tiny parts. Make sure you get the threads lined up before you put any kind of screwdriver on it.
- If you get them cross-threaded, you’re in trouble.
- Replace your float needle valve.
- When the needle is all the way down on its seat, and the float’s all the way up, it should be just below the lip, and that way there will be just enough fuel in the carburetor at all times.
- If your accelerator pump has a tear, like ours did, this may explain stumbling when you accelerate. The fuel isn’t going down the throat of the carburetor.
- Disassemble the old accelerator pump. Remove the felt, then the spring seat and tiny spring.
- The big recoil washer is then removed, the smaller one, and the recoil spring.
- Reassemble the small parts from above onto the new accelerator pump in the correct order: recoil spring, small washer, recoil retainer washer, tiny spring, another washer and the felt washer.
- Lubricate the pivot, tighten and then check to make sure it moves freely. Position the gasket, making sure the holes line up. Then, lubricate the leather diaphragm. The lip of the diaphragm must go down in to the cylinder without doubling back or you will end up with a mess.
- Before inserting the case screws, put a dot of oil on the tips and add the small washers. Tighten them and then go back and snug them up, working in a star pattern around the carburetor to ensure a good, tight seal.
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