95GrandPrixGTP
20+ Year Contributor
- 59
- 0
- Feb 24, 2003
-
Decatur,
Illinois
Since I bought the car about a year ago, it has ran extremely rich. Sometimes I can actually see black smoke puff out of the back of the car when I get on the gas a little bit. As said in the title, the car is an automatic and it is completely stock (my daily driver). What would cause me to get at max 150 miles per tank? I've gone about 60 miles so far and have gone through almost half a tank of gas. Any input as to what needs to be looked at? TIA
