problems starting

Car starts every time I turn the key, but turns a little longer than it should before finally starting. Sounds rough too, like the starter turns for a second, then stops for a fraction, then goes again, stops, goes again, and it starts.

If I turn the key, turn it back before it has time to start, then immediately turn it to start again, it will start that 2nd time like a brand new car.

I was told I probably have a faulty PPR (or was it PRP) valve that was sticking. Anyone know what this is? I probably won't fix it right away unless its easier than I think it will be, but it sounded like this was something in the fuel tank, which I don't want to empty and drop right this minute.

Any help is appreciated. Thanks guys.

So i need to replace the whole fuel pump? What are the failure possibilities here? Will it just not start one day or could it possibly die while driving?