Insulator Nose Temp


When the temperature of the insulator nose exceeds 850°C the spark plug will overheat

which can cause the center electrodes to melt.

This can lead to pre-ignition/detonation and can potentially destroy your engine.

Spark plugs must have such heat fetures that during the engine operation theinsulator nose reaches theself-cleaning temperature higher than 450°C

as fast as possible and does not exceed a temperature of 850°C in any case.

When the insulator nose temperature is lower than 450°C, deposits of combustion settle on it

and over time can result in the spark plug fouling, leading to misfire.