Never posted in this forum and only had my jeep for a few months and i love it. I bought an 88 Jeep Cherokee 4.0 w/4WD that ran rough, a few months ago. I've replaced the Plugs, wires, rotor, cap, air and fuel filter, EGR valve and it runs A LOT better but I still get bad gas mileage. I average about 8 MPG in city in 2HI. My tire pressure is fine....I am just really stumped on what my problem could be. I dont believe i have a gas leaks as i have never smelled gas and have never seen any leak from the jeep. The exhaust always smells like the engine is burning really rich. Any help would be really appreciated as i am about to sell my daily driver and drive my jeep full time for a few months.