jon13smith

I need some help guys. I've got a 2012 f150 3.5l ecoboost. Im approaching 57k miles. I am experiencing some loss acceleration and horsepower...along with diminishing MPG. I go to school in the mountains, and regularly average 16 MPG (or just below) in sub freezing temperatures. Considering that it is now warmer and normal spring temps, I would think my MPG would go back up a little bit, just as it did last year. Instead it is dropping more every single day, and I am already down to 15. Additionally, the power that I experience as I accelerate is extremely lacking and in some cases is delayed and "jumps" forward after a few seconds. I am aware that going up and down the hills here effects mpg and acceleration, but I have made these observations on flat roads, both in and out of town.

Can anybody give me some much needed advice?

H-60 Electrician

The first thing I'd look at is the air filter.