xj_

am hittin rite around 18mpg in the jeep now its sweet

Desert Rat

This thread would make better sense if you stated how such a number was acheived.

OOdynamite

X2, I want 18 mpgs. Please share

bikerider

X3

xjmuddigger

i get about 18,but i took out my front driveshaft to save on gas

mrfajita

My last tank (of crappy Shell E10 gas) I got 17.5. homemade cold air intake made of a piece of dryer duct shoved in the factory airbox, routed to the front grill by the rad. Also, a set of 703 injectors, can of seafoam every few months, all combined with NOT driving it like a maniac in a sports car.

Artful Owl

I was getting 14.7 mpg, I fitted new spark plugs last week - same brand and number.

Now I get 12.3 mpg

JeepingDan

Must be nice. How did you do it?

JeepingDan

Did you gap them?

Artful Owl

Yes I set the gap to .90mm as the handbook said.
The plugs I removed were in good condition, but I thought replacing them would give me slightly More mpg

Old and new plugs are identical number NGK - R plugs.

JeepingDan

Whats the gap on the old ones?

warthog

X something, Can't remember, But also, what tire size and gears you running?

RichieLT

a new air intake system will help. a lot

xj_

Did a full tune up just used the crappy champion plugs gaped em to 35 thousanths and at my school we have an awesome machine called a motorvac and it disconnects ur fuel line from the motor and hooks up the machine for the jeep to run off the gas in it and a special cleaning agent that works wonders. Also don't go flooring it around everywhere its a jeep... not a racecar

warthog

Again, What gears and tire size?