Hi all,

I'm really scratching my head about an issue I have with my power steering. It foams and causes the fluid to spill over the tank on top of the pump. I have cleaned and checked the whole system and there are no fluid leaks apart from the spill over. It is as if the system was sucking air but not leaking fluid under operation. When I bled the system with a clear hose running from the bleeder on top of the steering box to the tank the fluid was first normal and after a few seconds started becoming foamy. So it sucks air during operation.

Would anybody have an idea where that air could come from without leaking any fluid?

Of course I made sure that the fluid level is ok so air is not being sucked from the tank.

Thanks in advance for the help!