well open the shocks,,,,,,,,total you need to open 3 bolts ,,,,,,,,,,,no need to remove tyre or put the car on jack,,,,,,,,,,,all process wont take more than 5 min,,, ,,,pull them out and gave a physical check ,,,,,,,,,,,if found faulty then replace then, paksuzuki cultus comes with local made shocks and springs which are easily availave in market , but to check the springs you have to pull them out and measure there length ,,,,,,,,i dont have exzact measurement,,,,,,,,,,but pulling the spring out is not as easy as that of shocks ,,,,,,,,,you need to remove all suspension ,,,,,,,,,,,,once the spring is out take it to the new parts shops and ask them to show me the new spring ,,,,,,,,,,,compare the length ,,,,,,,,,if found ok then make a lame excuse from shop keeper and use the old one ,,,,,,,,,,dont use local made packing,,,,,,,,,if your old packing is not worn out then use it again,,,,,,,,no problem if its compress few mm,,,,,,,,,,,,,because the local one is almost double the thickness of original which make your car high from back and also disturn the camber and alighnment ,,,,,,,,,,,,,and also it wont last long,,,,,,,,,