chris wrote:
This will run cool fuel thru the engine driven pump
and then back to the tank.

This works for me on the IO-550.

Cold start is: Mixture rich, throttle cracked, boost pump on, pressure
comes up, boost pump off, clear prop, crank

Hot start is the same except the boost pump is run much longer before
attempting to crank.

Actually, hot starts are only an issue if you shut down, go away for
a while and try to start up (the worst case is your average fuel
stop). The thing starts right back up again if you crank it up
after it was running (good thing too if you run a tank dry).