Spark Plug Compression Ratio NGK Spark Plugs Tech Video
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Is the spark plug temperature affected by humidity? A spark plug operating temperature is affected by humidity and ambient air temperature. As a humidity increases or ambient air temperature entering the engine decreases, lower combustion pressure and lower cylinder temperatures are present. It is important to keep the spark plug operating at the proper temperature. Keeping the insulator clean of carbon and fuel fouling. Elements such as elevation, humidity and anti-temperature are factors that must be taken into consideration for spark plug heat range selection.