Spark Plug & Ignition System Basics - Night School
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A key wear point on older breaker point ignitions is the distributor cam. These lobes take the brunt of punishment from breaker rubbing block pressure. Over time, and especially with inadequate point lube, the lobes wear or scratch. You can polish these lobes with a Dremel, polishing pad, and quality metal polish. Often, an electronic conversion is the solution for a worn out distributor cam. View Related Article
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