My springs are not at all working!

Hey guys,
So I wanted to add a suspension in my car, but it turns out that the springs are not working. No matter what I do, without springs and with springs its the same.
Here’s how am setting them up:

All the 4 springs have stiffness to 50000, damping to 600, freelength to 5. I remember doing it this way some days back and it worked perfectly, now it just wont provide the shock absorbing.

I have tried lowering down and increasing the values to no avail. Thanks for help!