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Should I buy kits to rebuild both myself or send them out to a rebuilder? I have rebuild atv and motorcycle carbs before but this would be the first car carb. I have a carter WD0 carter carb and I think a carter single action pump any good instructions or resources to rebuild myself? Thanks everyone!

A fuel pump, and especially a single-action pump, is the simplier to do and basically just consists of a careful disassembly, evaluation of the castings and parts, and replacing the diaphragm and the valves. There are no adjustments to make as there are in a carburetor; you might take a look at Big Kev's excellent "show and tell" in the Literature and Manuals section.

With a carburetor it's more than just cleaning and changing gaskets, an understanding of the various ciruits is important, and there are a number of adjustments that should be made and it's not usually a good assumption that they were correct to begin with - too many unknowing "tinkerers" oould have had a go at it in the past. If you give it a try and the results are not satisfactory, all you are out in addition to your time is the cost of the kit so in that case you could then send it to a good rebuilder or buy an exchange rebuilt unit from Max or Kanter.

Andy,
Based on my experience with my carb, I would go with a quality exchange. I had my carb rebuilt by an experienced mechanic and it still didn't work well. Other guys had been in there before and likely messed things up. I would have been better off just getting a remanufactured carb in the first place. A whole bunch of problems went away with a quality unit. I used Max with excellent results and service.
Good Luck,
Mark