Crankwalk..... not enough oil to the "center" bearing (aka thrust), causing it to have excessive wear, therefore that allows the crank to have end play (back and forth movement) and if you lucky enough, you can have some serious damage done.... or like me just get away with a F *cked up crank sensor and some bearign and a bad block and crank and the list goes on.... ill be pulling my motor soon and take some pictures of it!!

F/S: 4g63 everything ^_^