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In previous studies, we have shown that even if local conditions and coil charge seem remaining constant, electrical energy deposit by a spark plug was never the same. In fact, its mean and variations depend on local conditions in the vicinity of the plug, and may be linked to phenomena during the breakdown. In this paper, we will focus on spark plug temperature effects, both on the electrical energy deposit and on the early flame kernel development for propane-air lean mixtures in closed vessel.