https://automobilist.org/tags/spark-plugs/ Recent content in Spark Plugs on Automobilist.org Hugo en-us Tue, 14 Apr 2026 00:00:00 +0000 https://automobilist.org/2026/04/14/spark-plug-replacement-reading-the-plugs-and-getting-the-interval-right/ Tue, 14 Apr 2026 00:00:00 +0000 https://automobilist.org/2026/04/14/spark-plug-replacement-reading-the-plugs-and-getting-the-interval-right/ <p>Spark plugs are among the few engine components that provide diagnostic information about the engine&rsquo;s health when they are removed. The condition of the electrode and the insulator on a removed plug — the color, the deposit pattern, the electrode wear — tells a story about combustion temperature, fuel mixture, oil consumption, and the plug&rsquo;s remaining service life. Reading this information correctly takes about sixty seconds and is one of the more useful inspections available without specialized equipment.</p>