I have. A 2001 f250 7.3 l. That will start up run like new. For. A few mins. And then It will start gradually Running rough. Surging. Blowing White Smoke Til the point it shuts off. Then when i start it back. It will do the same thing. Any. Help. Would be greatly. Appreciated

 

Sounds like an injector acting up. Can you tell if the white smoke has a fuel smell?

Also, reading the codes would be a good thing to do if you have access to a scan tool. Torque Pro on an android smartphone will work. ForScan will read codes VERY well.