Vickie has developed an pretty annoying quirk. - one my wife really hates when she has a screaming 2 year old with her

Most of the time - she starts perfectly, on about the 3-5th turn of the engine, but on the rare occasion, it seams she might be loosing pressure on the fuel rail.

I will need to turn the engine over MANY MANY times while pumping the pedal in order to get enough fuel to get her started.

Once started - she runs like a dream.

haven't found any rhyme or reason (Full or 1/4 tank) (first thing in morning or sometimes after a 30 min drive). Can't say much about the heat as we are in West TN in the Summer - so it's always hot! (morning or night)

Most of the time it does seem to occur on the first starting of the day, but one time my wife started the car (perfectly) drove to the gas station and filled Vicky up (with the required 93 octane) and then Vickie wouldn't start without the pumping.

Not sure if it is the fuel pump going out or maybe the pressure regulator that is causing it to not maintain the necessary fuel in the rail.

Any ideas?
Thanks
Charles