Here's a thought, and maybe you guys can echo on this:

Could it be something offsetting the ignition timing? I've noticed a sharp drop in my gas mileage down from about 19-21 mpg mixed to about 14-16 mpg mixed. I checked the vacuum at the distributor and it seems to be strong. Could there be an electronically controlled valve somewhere that is poorly regulating this vacuum?

Thanks,

-Troy

__________________
- - - '77 federal 280e - 222k miles
- - - '85 380se - 129k miles
- - - '07 Chevy truck
- - - '79 Datsun 280zx with '82 turbo motor
- - - Currently looking for a clean 190e with less than 160k miles.