Um, define 'running fine' when using diesel fuel in any unmodified glow engine?

The compression ratio should be no more than 12:1 in any FAI fuel (80% methanol and 20% castor) engine and even then that is very high for a two stroke glow and model diesels demand around 18:1 to run what I would call 'fine.'

The venturi size is usually too big for optimum running also, port sizes generally follow too as do piston/liner seals, so I don't see any gold mine in getting a hard to start, low compression glow engine staggering along at well below its optimum power at all!

If someone could convince me that any standard glow engine ran well on diesel fuel then I would highly question how well it ran in the first place as a glow.

I think that duel fuel is a myth when looking for anything useful in model engines.<br type="_moz" />