Ok every one, here I go:
I just bought a 03 F250 SC SRW 4x4 with a 7.3 in it and 116k on the clock. I love the truck but just recently (in the last two days or so) its developed a bad "thump" in the front end that can be felt in the floor board of the truck every time it hits a bump in the pavement. It also "knocks" or "thumps" when you turn the wheel to either lock but isnt felt through the steering wheel. I was at first thinking that it was the ball joints as the tires are cupping a little on both outer edges, but after crawling around under the truck for a bit last night, they look like they are fairly new being the boots are in good condition and they all have zerks in them. I am at a loss as to what it is. Please help an unexperienced PSDer in diagnosing this problem.