Question about 2009 Hyundai Accent

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Had a poor gas milage only 23 mile per gallon city

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Keep your services up also on the transmission. Try this simple fix, get some octane booster and injector cleaner and put them into the tanks $8. Hopefully this will help break off the carbon deposits in the injectors and give you a smooth economical ride. Good luck

Posted on Nov 20, 2009

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2009 Accent has 10:1 compression ratio. I have found fuel economy is better with 89 or higher octane fuel. This allows ECM to optimize settings for best economy and performance. The fuel economy will also improve when the vehicle has > 15000km.

Posted on Feb 23, 2010

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I would change the plugs, change the plug wires, change the fuel filter, change the air filter.
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