ok well this isnt my car its my girlfriends car, but im using it while im rebuilding my rx7. Anyways the car is getting harder and harder to start in this freezing chicago cold. today i had to let it sit in the sun for half the day before it would finally start. It turns but it doesnt want to turn over. and it will sputter just a little tease making me think its going to kick over but it doesnt. here is some background on the car 91 si d16 motor, she has not changed the spark plugs the fuel filter or any other basic maintenance parts on it since she got it from her brother. Also her brother put a distributor on the car that is not for the d16, not sure what it belongs to. I went out and bought spark plugs and wires today (i know the wires wont do much but she was paying so what the hell?) any ideas that i might be overlooking on this one?? I appreciate the help.