Hi - just going back to your glow plug.... Mine glows continuously if I take it out of the car and connect it, so you could have a duff glow starter.
The other thing to think about at the moment is the temperature. My Inferno will not start at the moment unless I warm it up first. You can do this with a hair dryer, but I find it easier to just leave it indoors in a warm room for an hour or so before you want to use it.