1984 MB 500 sel hydrolic suspension question
 

I have a 1984 MB 500 sel, the front of the car started to rise one day and never went down (its hydrolic). I released some fluid one day and it went down but as soon as i crank the car it rose right back up. Could this be attributed to the suspension valve (self adjusting leveling valve) or although i don't think so, the pump or the accumulators because the car is rising and no leaks. i would really appreciate some feedback, thanks you guys