Ordinary glow plug.

Standard OS carb.

Carb adjustment very critical ... almost impossible to get it right. But, the engine does run and sustain itself. Can't say that I noticed detonation, but I spent about 20 mins with my mouth agape.

There's a thread somewhere, about a commercial version of this ... .40-sized two-stroke, running on petroil mix and glow plug. Buuuuut, that engine has a carb which is made for the job, with appropriately-fine metering.