I had some powersteering problems on my 2002 Ford Escort. So I ended up chaging out the power steering pump. After bleeding it for awhile (turning wheel back and forth..raised and then sitting) It finnally started working right. However, after the vehicle sits around for a few hours, the steering goes right back to hard steering. The only thing I can think of is there is a leak somewhere sucking in air. I checked under car and no drip spots. Was wondering if this is due to a bad rack and pinion (it is somewhat old) or just maybe a pin leak somewhere else. Any help is apreciated
Ed