Folks,

 

I have a knock sound when going over bumps - particularly speed ramps. It doesn't do it every time, and if I go over a speed ramp with my wheels at an angle (ie I turn at the last moment) then it usually won't do it. It sounds fairly solid and like it's coming from the front drivers side suspension.

 

Any ideas? I haven't had the car long so don't really know what I'm looking for.

 

TIA,

 

Tony

front tension rod is one of the main causes for knock on the front but its usually on cornering!.. but jack it up and give all the joints of the multilink suspension a good look over. the upper links tend to squeak thats what ive got and its bloody annoying lol.

Thanks, I was guessing something like that.

 

Not that I know what all the bits are yet :-)

 

(There's a lot more under my 300 than there is under my 260Z!)

Check the anti roll bar drop links, this is a small joint that fits between the anti roll bar and the suspension strut, when they are worn they make a knocking rattling sound.