I have an 2004 SCREW with a 5.4. It has 146,000 miles on it. When I am driving and press the accelerator to speed up the engine bogs down and then takes off. At first I thought it might be the fuel filter. The filter was full of crap when I changed it. Still no change. There are no codes when I've had it checked. Any ideas?

 

Here's my story.

Do a search on "engine bogging"