Loss of power

[BRYAN99]

I have a 2000 F-250 with 230,000 miles. I was driving down the highway last night and when going up a small hill, the ruck hesitated, just for a second, then seemed to run fine. I went another 15-20 miles and was climbing another hill and the truck suddenly lost power. I got to the shoulder, and stopped, I put the truck in park, and whn I pushed the throttle it sputtered and was blowing blue or white smoke. I then turned the truck off to see if it would restart, it started fine, but still ran rough. I was about a mile from my exit, so I limped it the rest of the way, it did pick up speed, but it still did not run right. I had the truck towed home, it was about three hours later, when I got home, the truck started and ran fine. This morning, I went out and it started fine. I carry a cam sensor in the glove box, because we have ran into problems with them on our trucks at work, so I changed the cam sensor. I haven't changed the fuel filter yet, but I have pulled it out and looked at it, it doesn't look like anything out of the ordinary. I have had the truck for about four years and put about 50,000 miles on it, and have had no problems. As far as I know everything is original on the truck. Any suggestions on where to go next would be greatly appreciated.

[BRYAN99]

Oh yeah, the fuel pump makes a different sound when I turn the key on, it has been doing that for several months now though. I also have had to plug it in for the last couple of years if the temperature gets below about 20 degrees.

[audiocontr]

Check the fuel filter and fuel pressure. May want to pop the intake off of the fuel pump and blow compressed air into the tank.

Could be numerous things. Any codes?