i have seen this mist before when trying to start my engine.
i didn't think it was a problem.

i tried my gas/glow conversion adapter in my second new 28cc, 11.1mm carb, twin ring, higher compression engine.
it had a smaller prop than normal because i smashed the other.
but anyway i tryed gas/glo on it and i hardly noticed any rpm drop at all WITHOUT glow plug heater!
then i tried the transition and that was the same as spark ign too!!!

now i need to get a new prop and try it with the 10/11 nitro i ordered[>:]

on spark ign it would get a 14x7 #3 blade master airscrew up to around 10,000 on ground! (engine not on plane, so no unloading)

shaun