9mpg? wtf?

[Slow7.3]

ok so lately ive been looking into my fuel economy and i am getting 9mpg "around town" and i towed a trailer this past weekend with a mud truck on the back and couldnt go faster than 63mph and got 6mpg on the way up and back. any ideas on what this could be?

[Dasaliac03]

buy a tuner. my truck stock would get 10-16mpg, depending on load and my right foot

[bigb56]

any smoke?

[7.3550Duty]

u check your tranny fluid to see if it has a burnt smell to it? maybe its starting to slip and causing your truck to work harder just to go as fast as you did? change your fuel filter anytime soon??

[Slow7.3]

Originally Posted by Dasaliac03

buy a tuner. my truck stock would get 10-16mpg, depending on load and my right foot

Ive got one i have the diablo predator.

Originally Posted by bigb56

any smoke?

it smokes black when i get on it every now and then cause i have my programmer set on 100hp. no smoke other than that.

Originally Posted by 7.3550Duty

u check your tranny fluid to see if it has a burnt smell to it? maybe its starting to slip and causing your truck to work harder just to go as fast as you did? change your fuel filter anytime soon??

i will check that first thing in the morning. i just changed my filter 2k miles ago

[Stroking]

Check you exhaust backpressure sensor tube. It could be getting clogged with soot

[Slow7.3]

truck still running like crap currently getting 8MPG and driving slower. breaks up a lot lately....

[7.3HeavyHauler]

i was getting about that with mine when i first got it, i changed the fuel filter and the air filter and that greatly improved my gas mileage. just a thought, not a solution.

[Slow7.3]

Did that today before work still running a little rough. Trying to figure something out

[dieseldan2005]

Check your CAC tubes and intercooler for leaks. It will cost you boost, mileage, and power if there is a leak. You should NOT be getting that low of mileage!