I finally got around to entering in my gas receipts into my MPG spreadsheet yesterday, only to find that about 2 months ago my MPG dropped from about 24 to 19. It's been 18-19 consistently for the last 4 fill-ups. I replaced the rotor and cap as well as changed the oil about 2 months ago, and foolishly started the engine without the oil cap on. I quickly realized my error, turned off the engine and replaced the cap (and cleaned up some oil). I also (almost) ran out of gas within a week or so of the oil change incident. It started to sputter while I was driving but I was able to get it off the street with the engine still running. Since then the only other thing I did was clean out the flame trap and crank breather box. It still runs about the same and I haven't noticed any significant decreases in performance.

Could the lack of oil pressure for about a minute have caused something to change. I haven't seen any oil spots on the ground and it's not burning any.

Any help would be appreciated!

a-