I'm new to this site so excuse me if I post wrong.
I'm having problems with my engine hesitating/stuttering at low end acceleration. It idles fine and when I push the pedal hard it takes off just fine with no stuttering . I replaced the fuel filter and added high octane gas and a bottle of booster but still acts the same.
Any ideas?

 

Welcome to the forum
Have the plugs ever been changed? You may also try cleaning the MAF.
For how to on these things read thru this thread https://www.ford-trucks.com/forums/1...ere-first.html

Enjoy the forums.

 

I've heard a lot about cleaning the MAF, especially after going to a K&N FIPK cold air intake and losing gas mileage even while on the highway with the cruise on so I know I'm not putting my foot down. I've heard that sometimes oil gets on the MAF from the K&N filter as they may over oil it at the factory. Has anyone ever cleaned the MAF after losing mpg with their K&N and regained all of that mpg because I've lost about 2mpg.