I'm having trouble with my lancer, with the front end knocking when i go over a speed bump but only on the down side of the bump not at the initial hitting of the bump. My car originally went in for squeaking and rubbing noises in the front and now after having my front strut tops, ctrl arm bushes,fr suspension bushes and also my front springs bcz the drivers side was sagging. It has been going back to him still bcz the noises wernt gone and new one had started, he has replaced everything now twice except the strut top. also the front struts are only 5000 ks old and even then he had to replace the left one for an air pocket. I have now taken it somewhere else for a second opinion and two places now don't know what is causing the knocking. both places have told me the underside of my car is immaculate the whole car even there is nothing loose or showing wear my car is 100% except for this noise that they cant fault. Has anybody heard of a knocking noise in the front end like mine, it sounds like its coming from the top area when i go over bumps. Please help!!