YOUR EXHAUST PIPE IS INDICATIVE OF UNBURNED FUEL ENTERING THE EXHAUST SYSTEM. IT COULD BE CAUSED FROM A NUMBER OF PROBLEMS RANGING FROM OXYGEN SENSORS TO COMPUTER PROBLEMS. WITHOUT SEEING THE TRUCK, I WOULDN'T VENTURE TO GUESS. THE FIRST THING TO DO IS HAVE IT SCANNED FOR TROUBLE CODES. ANY CODES WILL LEAD TO WHY YOUR ENGINE IS RUNNING RICH.
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Wednesday, February 23rd, 2011 AT 3:11 AM