Flat Spot?

Hey all, I need some help. I've been getting bad gas mileage lately in my 92' 22re. It seems to have a "flat spot" in the acceleration curve. Also, when I come to a stop from a downshift and put my foot on the clutch, it seems to bog a bit. It's not bad, just noticable.

I just bought the truck. It was a weekend hauler. It only has 55k original miles on the odo. I'm wonderin if it's just a fuel filter? Or an O2 sensor? Or just some simple plugs and wires? Any help would be greatly appreciated. Thanx in advance.

could be a combination of both of those. The 22's are excellent motors if tuned up right. I'd give it a tune up (oil change, plugs, cap and rotor, plug wires, etc....) and if that doesn't solve it maybe the Mas air sensor needs cleaning or replacement