Sounds like you've developed a "miss". Could be one of quite a few things. First check the simple things, make sure all the ingnition wires are in place and in good condition as well as the dist. cap and rotor are in good shape. Second you may need new spark plugs. If you decide to change them make sure you use Bosch DC 9's and not the platinums. Let us know what you come up with.
1957 Dodge D100
1967 VW Microbus 21 Window
2004 Beach cruiser bicycle
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