Okay my air/fuel ratio gauge has been working for as long as i can remember and i looked at it the other day and it has randomly stopped reading? the marker on it that moves from rich to lean is all the way to the lean side and the place where the ratio usually shows is blank. am i running wayyy too lean and the gauge cant read it?????? or has something else happened. at this point i dont want to drive the car cuz i dont want to blow it up from running way too lean. if anyone has any ideas on what could be going on please help!