Lousy gas mileage

[grooveman]

1057515

Another question is about the gas mileage on my 92YJ 2.5L. It seems that Im getting no better that about 120 miles from a tank of gas (mostly flat highway driving)
Ive owned it about two years and Ive changed plugs and wires but never tuned it or anything else. Any suggestions?[addsig]

 

[Quinners]

1057516

Do you possibly have a slow leak somewhere?

That is definitely not good in the mileage department... :-( [addsig]

 

[Tug-n-pull]

1057532

Let it breath. Replace the intake with a K&N if not a full intake change get a filter for your orginal air box by them. Get the exaust to breathing. Either hollow out or remove the cat and add a flow through muffler, this alone will really make a great improvement on milage, power, and sound. You may still have other problems like a leak but you will smell a leak. good Luck with the quest, with gas prices like we have now you need all you can get. Tug[addsig]