if you dont have leaks, get under the rear of the car near center of the rear axel area. look for a small 3x3 box . it will have a lever coming out of it that has 2 or 3 articulation ponts which then attaches to a rod running parallel to the axel. it is attached to the rod by a u clamp. this may have come loose. if it has you will not get any rise out of the hydro system . the easiest way to check is to put car on ramps(rear end) then loosen the clamp from the rod. with the car running move the rod up& down the car should raise & lower with the rod moving. obviously you need to take normal saftey steps. be sure you are lying flat when moving the rod as there is substantial up/down movement with the rod movement if the system is working. if this does not work the i have no more help .
john m
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