I have only seen one instance where something other than the vehicles fuel supply provided any starting assistance. That was on a full size Ford truck with a cattle trailer hooked to it. The guy was pouring gasoline into the air intake in his attempts to start it. I filled up and left before he ever got it started. You would not have believed the detonation noises. I asked him about it and he said the vehicle had ALOT of miles and that is what it took sometimes to start it.

__________________
Jim