I just flushed the fluid of the steering pump.Jack up the uplug the return line hose from the steering plug I turned the wheels left and right to get oil as much as possible then I put backed the return line hose and put some fresh power steering fluid.NOw when i start up the car the steering wheels is very hard to turn and making noise?What did i do wrong?Help.

p.s. this is on my 96 e320.

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96' E320