1991 Chevy Beretta Power Steering Leak

Hello

I purchased my Beretta a few weeks back from my brother in law. He had it parked for almost a year because while he was driving it, the Power Steering pully pulled out of the pump.

I replaced the pump 3 weeks ago, and have been trying to figure out the leak ever since.

So far, I have put in 2 power steering pumps (thought the first one might have been bad), replaced the "O" ring on the High Pressure line - Pump Side.

I don't see any cracks, holes, or anything else that indicates that there is anything leaking from the pump. But every day or two, I have to refill the reservoir.

Here's the odd part, I can drive it on the highway for 150 miles, and it hardly leaks a drop. But if I drive 20 miles in the city, all the fluid is usually drained.

I've had a friend turn and hold the steering wheel left and right, making the pump work hard. I couldn't see anything leaking.

Last night, I put a large piece of cardboard under the front of the car, and this afternoon, I noticed that there was a fluid buildup on the cardboard.

It was on the passenger side, about 6" in from the side of the car, but was about 2 1/2 feet back behind the wheel (well behind any steering system).

I checked under there, and saw 2 lines running front to back, they looked like either brake or fuel lines, but the fluid was defiantly power steering (it has kind of a "distinctive" smell too it.

Do you have any ideas?