Had a knocking noise from front end for years now been throught 3 mot's and passed no problem been told the knocking may be the shock absorbers i have grabed hold and there is movment if i shake it back and forth how much play should there be if any dont want to buy another set if there is suposed to be movment changed every thing else upper lower ball joints idle arm bush track rod ends this is the only thing i havent changed 20 years old probably the original shocks thanks ivan
The inspection for a shock absorber is a jounce. 1.5 reaction.
inspect the mountings and look for any damage. leakage. noise. if they are oem parts and 20 years old its up to your own discretion whether new ones will have the attributes you seek. bilstein seems to be the recommended part
SOURCE: THE CAR IS HIGHER IN
if you have a hydrolastic type self leveling system like a citreon club or a xantia then the hydraulic pressure on the nitrogen filled spheres will equalise thus causing the same height front and rear ,but i have never seen a merc this old with self leveling suspension the first case i have seen was a 95 jag with self leveling ride height so i can only give you my experiances with the citreon system as this system you have is a add on as far as i know and this add on system would be illegal in the europeon community as its not on the original certificate of homoglonation .----i would really need to see the vehicle to form any sort of opinion.Now the citreons used the spheres as the springs but if you have coil springs then this is just a gimmick self leveling that may have been installed to help boost sales but i have never seen this on these cars so what i would do is release all pressure and then measure the road height ,i have a funny feeling that the rear springs could be weak as the car is 20 yrs old so no matter how much you play with the hydraulics you will never get it right ,these old mercs like this do suffer badly with the rear bushes and all the bits on the back suspension collapsing as i have repaired no end of them with new silent block bushes and in extreme cases new road springs as well and the ones from northern europe brought to spain --well just junk motors to me as they are so corroded that to repair them i need a spanish donor vehicle in the scrap yard for parts.Try the height without the hydraulics first is what i would do to determine if the springs are weak though
Its needs steering system overhaul.The rack (Rod) & pinion & change of steering bush required pls.
Testimonial: "not solved yet but how can you tell if its the coupling or flex disk "
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it was the roll bar bushes in the end
It was the roll bar bushes in the end
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