car leans can the springs be fixed?

[mike657894]

My car leans to the drivers side. There are no shocks currently. If i stand on the drivers side rear bumper it sinks maybe 2 in and doesnt come back up. I jump on the passenger side and it comes back up but still low on drivers side. The car sat on flat tires on the half the wheels for maybe 20 years. Is there a way to fix this without replacing the springs?