Basically my pulley (crank)was making a slight rattling noise inspected closer and turns out crank pulley nut was loose and needed tightened ,anyways tightened and without tension on it , it was fine but fired belts back on and is the same ? so anyone had or know of this problem ? , do i need to change pulley ? whats the score guys ? helpp lol car runs fine but dont wanna drive just now incsae something comes off

 

had this prblem on my s2! was lucky and caught it in time the pulley was worn! had to peplace it and trhe woodruff key!