On one of my cars I have a bad leak at the flex pipe. The only thing is, my fuel trims never really sway more than +/-6%.
Prior to this I was under the assumption you could always tell from your fuel trims, but now I'm starting to think your only clue may sometimes just be your nose.
Prior to this I was under the assumption you could always tell from your fuel trims, but now I'm starting to think your only clue may sometimes just be your nose.