525 powersteering problem
 

353 Forrmula 2 pump system, starboard reservoir starts out 3/4 full and almost completely empties when running, when I shut off engine, immediately fills reservoir back with fluid pretty quickly. Steering is loose/ wanders.
Port side pump has a return hose threaded into fill cap. No fluid in bilge. Help

I've not seen a 2 pump system, but I'm willing to follow along. try to help.
I installed imco external uni-mount on my 292, but it runs only off 1 engine's pump. (twin engine boat).

I assume there is a manifold or something so both engines can have pumps?

Do you have external rams or the cable + ram that moves the tiller arm on the gimbal ring? I'd suspect a leak outside the hull if you have external rams. If not, I'd suspect either a leak or an issue w/the cable/ram setup.

There’s air in the system, if you fill it and work it back and forth while running, eventually the air comes out and it won’t back up when you shut it off

525 steering
 

Couple details,,, I just bought the boat , so I am still digging around the engine compartment. No fluid leaking that I can see. Has ITS transoms ... Both motors have power steering pumps. Port pump looks like it might just go to the cooler , and dump back in the cap, NOT connected into the steering system. The fill cap on the port has a threaded hole with a #6 line attached.. I couldn't see where the pressure side went to at the back of the motor. The Starboard side pump has a regular fill cap with a small plastic overflow hose . Will be looking into it further this weekend.

You need to bleed ITS from the bleeder valves on hose block probably mounted on the transom in between the drives, there's a certain way to do it and you need to pinch off the return line to the reservoir so the fluid goes through the complete system, I have ITS and 525 pump and this is the way I got mine fixed, high pressure line and return should be running down the starboard gunnel to the pump.

Awesome Thank you ...................... Not sure why there is a return line to the Port pump cap, seems like it should just be a resivior like the other side...