Fuel economy
Thread Starter
Racer
Joined: Jan 2007
Posts: 322
Likes: 0
From: Chapin South Carolina
Fuel economy
When I purchased my vette 3 years ago. I was getting an avg 22 MPG, which was great and a lot better than I expected. The fuel economy late last year dropped to 20 and then to 18 about a month ago. It was driving like crude and I was having fuel delivery issues. I replaced the fuel pump and then put new injectors on the car. Now the vette RUNS GREAT. But I have now dropped down to 17 MPG. I see posts of people reporting these crazy numbers. If this is normal, then I am happy because the car is running awesome but I do not want to be leaving money on the table if there is a hidden problem.
Thanks
Thanks
Le Mans Master
Joined: Mar 2004
Posts: 8,700
Likes: 298
From: Ft. Lauderdale Fl
Run a fuel pressure test....with and without the vacuum line attached.
Tape your fuel pressure gauge to your windshield and take a drive. (take a pencil and paper to record the readings)
You changed your fuel filter when you changed your fuel pump?
Tape your fuel pressure gauge to your windshield and take a drive. (take a pencil and paper to record the readings)
You changed your fuel filter when you changed your fuel pump?
