Weird that changing the fuel filter made a difference for such a short period of time. It would lead you to check fuel related issues first. Getting a fuel pressure gauge on it would be an appropriate step. Other things to check would be under valve cover harness connections. If you have a bad connection, you could experience the rough running and loss of power.
7.3 no power, runs rough??
I have a 2002 F250 7.3 turbo diesel that started running really rough a week ago. I put a new fuel filter on and it seemed to run fine for about 50 miles. Today is started running rough again and has no power to even move the truck. I put another new fuel filter on it and it didn't change the way it ran this time. The filter looked clean when I changed it today. Any suggestions?
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