Okay so I have been dealing with an ongoing power steering problem for the past year. My fluid leaks out constantly from the reservoir through the cap while it's on. I have replaced the reservoir, the pump, the o rings, and the pressure hose. Someone please help.

 

What PS Fluid are you using? I found some brands like to Foam with our system.

 

Some also reported the o-ring leak causing the air to be sucked in and creates foaming in the reservoir.

 

What year car do you have? Any difficulty turning the wheel or noises coming from the pump or rack?