Ignition candle for internal combustion engine

Spark plug (1) for the internal combustion engine of a motor vehicle, of substantially cylindrical general shape, comprising: - a substantially capacitive lower part (C) comprising: ● two coaxial electrodes: an internal axis electrode ( D) called central electrode (3) and an external electrode called base (2) surrounding the central electrode (3) ● an electrically insulating block, called insulator (4) interposed between the central electrode (3) and the base (2) an essentially inductive upper part (1) comprising: a central mandrel (8) surrounded by a winding (5), a low end portion (57) of which surrounds an upper end portion (31) of the central electrode (3) ● an outer envelope (6), ● an insulator (7) interposed radially between the envelope (6) and the winding (5) characterized in that the upper end portion (31) of the central electrode (3) comprises a coating (9) of material which: an electrical conductivity greater than that of the material of the central electrode (3), - does not exhibit ferromagnetic properties.