Abstract: An improved combustion igniter for internal combustion engines is disclosed, comprising a conventional spark plug improved through the addition of (a) an upwardly facing generally vertical wire element secured to the negative cathode of the spark plug and spaced apart from the positive electrode anode of the spark plug, (b) a catalyst material proximate the vertical wire element and either secured to the spark plug body or applied to the cylinder head; and (c) an injected steam source for facilitating catalytic breakdown of vapors in the combination chamber. Preferably the wire element comprises wire of pure platinum approximately 0.018" in diameter and 1/8" in length, and the catalyst is either (1) a nickel coating disposed on the cylinder head, (2) nickel wire with platinum segments disposed thereon secured to the park plug body, or (3) sheet nickel formed in a coil and disposed in the cylinder.