I just replaced my power steering pump....
I am having problems when the vehicle is shut off it blows fluid out of the vent in the resevoir cap. I know that the check valve is in the rack
correctly but I was wondering is there one in the pressure side of the pump?
Sounds like it wasn't bled properly, try running the engine while steering back and forth until you hit the stop on each side of the steering play with the cap off. See if that solves it.
If the steering wheel wa sturned with the ignition off their will be air in the system.If you have a vacuum pump and an attachment big enough to go into the reservoir have the engine running and continue to apply vacuum to the system after a few times this should resolve your problem.
you may have trash in the system and need to replace the filter which is usually made into the pressure line, if lucky you can replace with a filter with clamps but only if it is that type, you will probably have to replace that line which means bleeding it afterwards as the first answer tells only the Haynes book says not to go till it stops when turning the steering wheel
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