1985 f250 with the 460 edelbrock 4bbl. When it gets up to temp it loses power and jerks until I let off the throttle. Carb is tuned fuel filter just got replaced. I'm at a loss. I just bought the truck I have never ran in to an issue like this in any of my past vehicles. Any help would be appreciated.

 

Could you please explain just what you mean by "Carb is tuned"?