rad006

Hi I have 137 000km on my car and when im accelerating hard I hear a loud continous knocking noise that comes and goes, sound like from the back left but some say its the left front of the car. Now it is a warn shock mount or are my sideshafts warn or is there something out im missing? Ive had the car on a shock testing machine to say that there is nothing wrong so im stumped...please help thanks...

aolsen

Do you hear the knocking when you come to a stop?

bumpnzx3

describe the knocking noise a little more. when i hear "knocking under acceleration" i first think of detonation/spark knock or a rod knocking- which is a lot different than the "knocking" sound of a worn out control arm bushing or strut bearing

rad006

No noise when stopping and its not an engine noise...its almost like a heavy rattle as if something is going to fall off...happens mostly when the car is cold or extremely warm