I was told that a bad/dirty MAF sensor will make a code for a lean condition on both banks. I have cleaned the MAF sensor.
I'm currently in the middle of changing the spark plugs, but ran into a serious problem. One of the spark plugs doesn't want to come out. I think whoever changed the spark plugs last cross threaded the plug. It's a bitch trying to take it out so do I keep on trying or try to tighten it back?