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Why does my 1978 Chevy truck backfire through carb at start up after new distrubator?
Wiki User
∙ 12y ago
timing advanced, 180 out, Chevy requires delayed vacuum for advance, did you change the vacuum supply location? firing order 18436572 clockwise on distributer, turning distributer counterclock wise advances timing,
Wiki User
∙ 12y ago
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