Power Steering Leak -- Help!
1991 W250. I've replaced the power steering pump, the pressure and return lines, and the steering box, and it still leaks! The best I can tell, it's coming out the top of the reservoir filler cap. Occasionally, when I shut down the truck, foamy power steering fluid pukes under pressure out of the reservoir. Other times, it just leaks. It's not overfilled and will continue to leak until the power steering fluid runs nearly out and I have to add more. I was thinking of drilling a hole in the cap and running a vent line to a catch bottle. Anybody have this power steering problem? If so, what'd you do to fix it? I'm running out of ideas.