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Spark Plugs – Insulator Glazing

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Glazing appears as a yellowish, varnish-like colour. This condition indicates that spark plug temperatures have risen suddenly during a hard, fast acceleration period. As a result, normal combustion deposits do not have an opportunity to “fluff-off” as they normally do. Instead, they melt to form a conductive coating and misfire will occur.

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More information On Basic Car Maintenance CD Rom
Information supplied by Champion Sparkplugs ©2009

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