Q&A

 Master

It could be many things, unfortunately and without hearing the noise first hand or being able to do some basic diagnostic tests or be able to drive the car, its hard to say what the source of the noise may be. Anything that makes a noise usually leaves a mark or you may see rusty marks about the head of the bolt or nut. Get your dad to support the vehicle and check for play in any steering or suspension components. The bolts in the suspension should be tightened in the "loaded position" not with the wheels "hanging" in the jacked up position (it puts tension on the mounts). You could try spraying lubrication on each joint or bushing one at a time and see when the noise disappears, when the noise disappears you have fount the joint/bushing that is causing the noise. It sounds most important that you identify which corner of the car the noise is coming from. May be most efficient to allow an expert to diagnose what is going on.