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Subject I'm getting 27 MPG mixed driving.
     
Posted by sorka on May 20, 2008 at 10:31 PM
  This message has been viewed 153 times.
     
In Reply To help with my terrible gas milage... posted by gijew302 on May 20, 2008 at 07:26 PM
     
Message fairly easily since toning down my driving. Coasting to stops, no hard acceleration, except maybe 3 or 4 times on a single tank. This is up from about 22.5. I suspect if I drove 100% freeway on one tank without stopping and sticking to 63 like I've been doing, I could probably get 30.

At any rate, things to check:

1) Air filter.
2) Tire pressure.
3) Oil viscosity. Keep it to 5w30 or 10w30 or even lighter. If you're using 10w40, don't.
4) O2 sensors. Usually you will get an engine check light, but since you didn't, it only might or might not be O2 sensors.
5) Gas cap. If your cap isn't sealed, your gas will evaporate.

More obscure things to check:

1) Base timing
2) Condition of spark plugs.
3) Condition of connectors on EFI harness(adaptor for power transitor and injector connectors. If these are corrodded, your mileage will suffer.

     
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