my hks racing coilovers are knocking had the suspension off and sent to specialists they couldnt find any faults with it, what would cause a knocking noise ???? i have also got adjustable top mounts could this be the cause???

 

95% sure its the top mounts. they usually make some sort of noise.

It could be a tender spring hitting block too. (if they have them)

 

There is also spring knock that could make the noise you describe. The squared coil hits the adjacent coil. They have sleeves that go over the end coils to dampen that.

 

how could i stop the nise from the top mounts??? only seems to do it from 1 side tho

 

You could have worn control arm bushings. I had knocking which I thought was a loose bolt or something. I then bought and installed new LCA's with fresh bushings and no more knocking. Check your LCA bushings.

 

cheers for that mate, had it tracked and aligned yesterday seems to have gone worse, im prety sure its an anti roll bar bush or like u say wishbone/control arm bush. where did u get the lca's from m8, by the way im from the uk