bought a 95 integra ls about 3 weeks ago replaced the battery alternator and some other little things. it was running fine for about a week, and two days ago it was taking it a little longer to crank then usual. when i tried to leave work today it wont start. it will turn all the way over but wont make any noise. i push started it and it started right away and ran fine all the way home. when i got to my driveway i turned it off and tried to restart it, same thing all the way over no crank sound. help me please its my daily driver and i gotta get to work or im screwed