I'm getting this knocking sound when i go over a speed hump at an angle. When the first front wheel touches the hump, it knocks once and knocks again when the other front wheel touches it. There is no noise from the rear. What could be the problem?

 

blown shock maybe? front endlink is broken? give us some specs on your car.. if it's modded or not..

 

check the front sway bar

 

I'm on Tein coilovers. The knocking only happens when I go over humps. There are no problems travelling on normal street roads.

What should I look out for in the front sway bar? Broken endlinks?

 

yeah, worn/cracked bushings and broken endlinks.

are you slammed on the coilovers?

 

any news/updates?

 

I am not slammed on the coilovers. There is about half an inch gap between wheel and fender. My endlinks are not broken.

Would this mean my lower arm bushings require replacements? Any definite way to check this? Can steering rack bushings be the cause?

 

any of those bushings can cause this. jack the front of the car up in the air and start wiggling the wheels, top to bottom and side to side.

 

can you feel the knock in the steering wheel?

 

I shook the front wheels and it seems there is no slack or free play. The knock seems to be coming from the steering column but I could be wrong. If that is the location of the noise, what is the problem?

 

is it a metal on metal sound?

 

It doesn't have a metallic knocking sound. It goes something like "kok kok" if you try to pronounce the word.

 

hmm.. is it louder inside the car other than out? roll down your window. No idea what it could be if it's coming from the steering column area..

 

I was thinking of replacing the 4 vertical bushings and the circular one for the rack.