Can anyone give me any ideas as to why I am getting such terrible fuel mileage. I have a 97 Zetec with 59,000 miles. I have changed the timing belt, accessory belt, water pump, plugs and wires, fuel filter, air filter and change the oil every 3,000 miles without fail. I used to average 28-30 mpg, I am now down to 20-21 mpg!! It seems to run smooth enough. Thanks for any insight!
