I was driving from a light under light acceleration on a up grade when the turbos seeped to just kick in a loud pop and then a high pitched metal ricochett sound occured. Power decreased suddenly and a small amt ob black smoke appeared. I pulled over and the truck was ideling fine. I got out and no leaks or odd engine sounds occured. When the truck was revved is seemed fine but without the turbo effect. I have pulled the turbo and see no obvious mechanical problem as the wheels turn with ease. There seems to be some oil on the exhaust side. fuel mielage decreased over past 3-4 weeks. Mielage is 65,000. What could have happened?:confused:

its a ford, anything could have gone wrong