Originally Posted by
ahramin
EXDAC why don't you try a simple experiment: The next time you have your cowl off in cold weather, pump the throttle twice and then watch the fuel running out of the air box. I think you will then understand how much fuel is being delivered and where the fire will be.
I am not stupid enough to pump the throttle when the engine is not turning but I think the amount of fuel would be very small. The volume delivered is limited by the bore and stroke of the accelerator pump which are both small compared to the primer.
The reason a couple of cycles of the throttle, while cranking, works better than the primer is that the fuel is ingested by the engine instead of pooling in the induction system. Please confine your justification of increased fire risk to throttle cycles while cranking!