bassically i have got a knocking noise coming from the drivers side suspension. I went to a garage and they said it could be the top mount.

they told me to try tightening the bigger nut in the middle and when i did it just keeps spining. are the surposed to tighten or and the surposed to spin. i also nothiced that on the bolt the nut screws onto theres like a hex hole in it does that affect it

they told me to try tightening the bigger nut in the middle and when i did it just keeps spining. are the surposed to tighten or and the surposed to spin. i also nothiced that on the bolt the nut screws onto theres like a hex hole in it does that affect it