I've got a knocking noise coming from somewhere around the front-driver side wheel. I thought maybe the wheel wasn't mounted right. I rotated the tires and cleaned the hubs, but I'm still hearing it. It only occurs when moving and I haven't been able to figure out why/how it stops briefly when moving slow. Any thoughts???

Thanks in advance.

 

If you have a 4x4 maybe it is a u-joint??