2002 V6 MPG Issues...HELP!!!

[lajones1978]

I did a tune up on my stang and now I'm getting worse MPG than before I change the plugs, wires, and air filter. I'm getting like 50 miles less on a tank of gas and with gas prices this is killing me! Does anyone know what it could be?

 

[jcwilliams]

did you check the gap on your plugs?

 

[lajones1978]

Yes...and they were correct.

 

[wmburns]

Check the routing on the spark plug wires. Did you follow the factory routing including stand offs and loams? Run the car in a totally dark location. Look for the blue hue of arcing.

Check for vacuum leaks.

Any exhaust leaks?

Did you clean the MAF? Use only a product designed for the job. No brake clean. No carb/choke cleaner.