They definitely don't like waking up in the cold - mine needs cranking for a good 10 -20 seconds if the temperature is low single figure degrees outside. When it does catch it's normally one cylinder intermittently then keep on cranking until the second chimes in.
As Roger said, don't pump the throttle - it has absolutely no effect on the fuel system but throttle position does feed into the ECU.
It's worth noting that the ECU will only let the car start if the throttle is closed. If it's open the car will crank but not fire.
