My power steering pump began to leak so I took it out, planing on just swapping out some o-rings and washers. However after I reassebled it and put it back on the engine, instead of leaking it did nothing, I then took it apart made sure everything was in correctly and tried it again and still no luck, I have taken it out 3 times and I still cannont determine what is wrong has anyone else had this problem? It was working just leaking before I took it out, now it does neither