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Lousy Gas Mileage

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Old 03-01-2011, 07:57 PM
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Ok, here goes: I just recently had the fuel pump and fuel filter replaced in my Blazer, as well as a tune up and an oil change, but my gas mileage has gotten worse. I was told that it may be the fuel pressure regulator. Any suggestions?
 
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Old 03-01-2011, 08:04 PM
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Have you tested your fuel pressure?

Have you run any injector cleaner through? A double dose of the 20gal treatment bottles of Chevron Techron Fuel System Treatment Plus may clean up the injectors/poppet-nozzles.

Are there any stored OBD2 trouble codes?
 
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Old 03-01-2011, 08:45 PM
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Thanks for the response. I am not sure if the lines were tested and have not run the injector cleaner yet, but will do that tomorrow. And I am not sure about the trouble codes.
 
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