I have a 1954 chevy 1/2 ton with a 235. It runs great, but at idle it seems to miss every once in awhile. It will idle great and then just for a second run rough. Could this be timing? It has new plugs and points. How do I tune it if mine doesnt have the marks? What could help. Thanks in advance!


1954 Chevy 3100. Original 235 and Hydramatic

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