13IS250C Posted July 25, 2014 Author Share Posted July 25, 2014 Ok. The SA told me that if I had the carbon buildup problem it would be showing an error code. Is that correct? My average gas mileage has gone from 25 mpg to 20 mpg. Quote Link to comment Share on other sites More sharing options...
LexLufa Posted July 27, 2014 Share Posted July 27, 2014 Thanks for all the input and help everyone I have learned alot! Quote Link to comment Share on other sites More sharing options...
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