ORIGINAL: microsprint9
Well it's cold here in london too as you are not too far away from me, we were running gas/glow engines in -12 temps the other day with no problem, all i can tell you if it works with the ignitor on but doesn't when you take it off is either there is not enough methanol in your fuel ( but you said you mixed properly ) or you have a bad plug, if this is a fresh conversion remember that there is usually lots of crud in these engines from prevoius use that can ruin a glow plug, it took me 2 plugs in my 21cc before it ran problem free.
Micro....I think you hit the nail on the head. A good Glow plug is needed for sure. Best Regards Capt,n