I've got a kia optima 2004 2.4 replaced timing belt, crankshaft sensor, water pump and alternator car starts but oil light comes on at slow RPMs plus when I put the a/c power steering belt on car won't start When the car ran no vibrations but smelled like eggs after it warmed up. Car has been sitting for about 1 year finally got around to working on it . Need to get it running just cant figure out why by putting a/c power steering belt on causes hard turnover. I know belt was not too tight as soon as the belt is put on it wont start. power steering and a/c pullies spin fine. I'm planning on changing camshaft position sensor. Just not sure if that's going to help