Why is 06 cobalt only giving 18 mpg - 2006 Chevrolet Cobalt


CHANGE AIR FILTER.CHECK TIRES AIR PRESSURE.CLEAN FUEL INJECTORS.CHECK FOR FUEL LEAKS UNDER THE HOOD AROUND ALL FUEL LINES AT THE INTAKE MANIFOLD AND CHECK FOR GAS LEAKS AROUND FUEL TANK WHERE ALL FUEL LINES LOCATED.


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