What is the spark plug heat range, and why is it important?

What will be an ideal response?


The heat range of a spark plug is its ability to dissipate heat from the combustion chamber to the cylinder head. It is important to maintain the spark plug temperature between 842°F and 1652°F (450°C and 900°C). If the spark plug burns hotter than the desired range, the electrode could burn, and pre-ignition, detonation, and possible engine damage could result. If the spark plug burns colder than the desired range, the electrode will not be able to self-clean, which will lead to misfiring and poor performance.

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What will be an ideal response?

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Yaw sensors are being discussed. Technician A says most yaw sensors produce a DC voltage signal. Technician B says most yaw sensors contain mercury. Who is correct?

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