noob needs help with mileage - only 10 MPG!

slantsixdan,

I checked the odometer when I first got the car, and again earlier today. Today I did 15 miles on the interstate (according to the mile markers), and the odometer showed 15.3 miles. If anything that should slightly overestimate mileage, but not significantly - if the interstate mile markers are accurate, mileage is overstated by 0.2 miles per 10 actual miles.

There are no obvious fuel leaks...

I posted these above in reply #31, but here are the leak down percentages again:
cyl %
1 35%
2 30%
3 25%
4 25%
5 34%
6 25%

I know these are not good, but do they explain the poor mileage?
Are there specific things I should be asking my mechanic to look at?


rmchrgr,

The car doesn't run rough, but idles rough once it warms up. It idles fine from a cold start.