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Q: Using gas badly an missing

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We have put new plugs an wires 2 new oxygen sensors on it 1 coil pack an also had a muffler shop check it for stoppage please help

My car has 250000 miles.
My car has an automatic transmission.

In order to help with this diagnosis you will need to submit the vehicle make and model with the year and engine size. This problem can be many possible causes and would need this vehicle information to help you better.

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