Bad Gas Mileage

[Skandocious]

I'm assuming that you meant your truck has the 5.4L... They didn't offer the 5.8L after around 97. Would be an awesome swap if you do have the 5.8L though

 

[F 150Cobra]

im geting 6-8 mpg.. it sucks... i think its time to change the O2 sensor..

im having fuel pumps probs so im not shure what cuasing the BAD mileage yet..

or maybe my timing is a LITTLE to much? lol

my foot is a little heavy but i dont think its the main reason

 

[mrfixit]

So, what happened with bogeyman?