Starting Prob

97 Cavalier 2.2L
First I would like to know if someone could send me a picture of there starter from the top(looking down). I want to make sure I get the wiring connection right.

Now Could someone maybe tell me what this problem is...
Its my sisters car, It will run fine once started. But Sometimes when she stops with warm engine (sometimes cold) it will not start. It makes some kind of noise but not sure what it is. We have replaced the slienoid. But still the same problem.
I read somewhere something about the coolant temp sensor could be the problem, Or Maybe something about a injector. I think I did notice that a injector might be leaking. But the valve cover is leaking also so its kinda hard to tell.

Is there a way to test the Coolant temp sensor?
And If I remove the intake mani do I have to replace the gasket, Because she is broke.

Thanks for the help, I tried searching but will continue.