on efi engine, you hear very light buzz sound when you turn on ignition key from fuel pump, before start, thats when fuel goes to fuel rails and there is no need to press gas padel. you get a perfect start if yr battery is good , and all sensors working proper.
on carby engine, you can pull choke in winter. and get a perfect start if carburator is tuned.
there is no need to circulate fuel all over in system when shuting down