gas mileage

HONDA CIVIC
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JOHNY633
  • MEMBER
  • 1 POST
1999 Honda Civic XL, 106000 miles. Have taken good care of vehicle. constant oil changes, filters ect. Have recently lost gas mileage, about 6 to 10mpg. New spark plugs, increased power but nothing to gas mileage. Vehicle runs very good. Maybe o2 sensor? Also great site, lots of information.
Jun 26, 2006 at 8:52 AM
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BRUCE HUNT
  • ✓Experienced Mechanic
  • 3,754 POSTS
I wouldn't mess with the O2 sensors yet. They can be a factor but there are other things to look at. Timing, tire pressure, dragging brakes, air cleaner, etc
Good old basic stuff.
Jun 27, 2006 at 12:16 AM
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