NoGo!

What's goin' on? My engine had been running really rich, so we fooled with the mixture and leaned it out. Since then...there's no go! It lags pretty good under acceleration. I think it might be missing, that's kind of what it feels like. Also it backfires just a little bit after I let off the gas coming from high RPMs.


Anyone know what's happening? Is it missing?


What might be causing this?
I can't believe all this has been
happening lately. My car's never
really given me trouble before.