Sternone, why are you asking something as basic as this? I've read your previous posts - thought you knew everything.
Come on Shy--those sort of comments put people off asking questions.
Any engineer worth his salt would at least take the cowlings off after a carb fire and do an inspection.
I always thought the 10secs was to allow the excess fuel to drain away, not sure how it vaporises in cold weather very well after you stop pushing the primer. We used to prime six pull the prop through 4 revolutions (mags off!!) another 4 primes and start. The secret of getting the ones going I am come across seems to be over priming, even priming while starting.
I wonder Sternone if you knew where the nearest
external fire extinguiser was while you were doing all this. Before starting precautions--always check the position of the nearest external fire extinguisher.