I'm driving a 2000 F-250(4x4/4.10 gears) with a 5.4L and recently I've had some engine problems. Nothing major I don't think/hope.

When I go to accelerate the engine "chugs"(stutters, boggs down, feels like its being choked)... holding a steady speed almost always eliminates the engine stutter... at first I thought it was the coil packs but after talking with some friends and them test driving it they are convinced its a fuel problem. Since it was time for new plugs anyway I put new plugs in and it looks like the engine is running very lean.

The fuel filter is new(less than a week) so my friends and I are thinking its either one of the O2 sensors or the MAF... I have a full custom dual exhaust with no X,H,Y pipes... no cats... and my O2 sensors look pretty rough(too many trips to the woods/mud holes I guess)

I was hoping to get any ideas, maybe someone has had this problem before that could point me in the right direction.