Refitting bottom ball joint to a peugeot 206 - 206 Peugeot Cars & Trucks

I think you should buy repair manual first for your vehicle after that it will be easy for you to solve the problem. Check the link may be you will get something useful here PEUGEOT 206

lower ball joints are fitted from the bottom up and are either bolted back in place or are pressed in place . I have done this pressing bit by fitting the ball joint in place and doing everything up and then placing a jack under the ball joint and raising the car so that the weight is on the suspension and ball and then I use a heavy hammer and hit the arm down which generally drives the ball joint into place.. Remember that the weight of the vehicle makes the suspension arm press down on the ball joint so it and tries to pull it up through the arm

check your sway bar and sway bar connecting links, ball joints, inner and outer tie rods and don't forget to check tire pressure and do a complete check for any broken suspension parts front and rear of vehicle

The most likely causes will be...
A worn ball joint on the front suspension.
A broken front spring.
A worn driveshaft.
Most mechanics will have a look for you at no cost.
But you can test as follows.
(Driveshaft=) in an EMPTY car park or similar area turn your steering as far as you can to the left. Drive in a circle at about 20mph and listen. If faulty you will hear a regular "clonk, clonk, clonk" noise. Repeat this with your steering hard over to the right as well. It might be louder in one direction than the other.
(Ball joint=) DO NOT DO THIS ON JUST THE JACK!! PUT IT ON AXLE STANDS!!
Make sure the steering lock is ON.
Jack the car up and PUT IT ON AXLE STANDS for stability. Using a bit of effort grab the top and bottom of the wheel and try to rock it. Grab the wheel at left and right and repeat. Other than some steering movement it should be solid. There will be movement if the joint is worn, there may even be a click or clonk noise.
(Spring=) As for the ball joint test PUT IT ON AXLE STANDS!!
With the car off the ground take off the front wheel. Using a torch get a good look at the spring from the top all the way down to the bottom. There should be no breaks, shiny or missing pieces. Gently, but firmly, try and move the spring. It should be straight and not move. Do this both sides.

try this:

take it for a wheel alignment test to check if anythng is wrng with the alignment if not thne chage the suspension arm and the ball joints

Check the CV joints for sloppiness and if a rubber boot is torn, allowing road grit to enter, then replace the CV joint.

Check the drop link and sway bar (anti roll bar) bushes also the knock could be in the strut top or the strut itself, maybe disconnect the drop link to the sway bar and drive over a pothole and see if the knock is still there.

Is this vehicle front wheel drive..? If it is then you have a CV joint about to collapse !!! The CV or Constant Velocity joint allows the drive from the transmission to drive the wheel during turns. The joint is made up of balls and sockets and as the sockets wear,they elongate. Eventually, the balls try and lift out of the sockets and this is the popping sound you can hear.. Replace BOTH joints because if one has failed, the other one will too. If you don't replace them, they can snap and you may lose control and crash !!! Replacing them is relatively easy. Remove the drive shaft from the transmission or gearbox by releasing the large nut at the outer side of the disk rotor. release the upper ball joint which will allow you to pull the shaft out of the rotor and the transmission. The joint is held onto the shaft by an internal circlip and a good tug on the joint will allow it to slide off the shaft. Refit the new joint and refit the shaft. Make sure the nut at the rotor end is TIGHT!!!! and make sure you refit the locking pin if it has one..

i think u might need to have an axle replaced