A&C there was an old boy who was the last ditch effort when it came to starting engines who used to have a slightly different method to most.
He would have the throttle closed then prime as the engine turned over while saying in a loud yorkshire accent "start y'r bugger"
He was of the opinion that 95% of starting problems were due to over fueling instead of being under primed.
What would be the pit falls of pumping the primer while turning the engine over?