Have you scanned the computer for trouble codes? If so, what code (s) did you get? The black smoke tells me it is running really rich (too much fuel). An O2 sensor can cause it, but the rotten egg smell leads me to believe there may be a problem with the catalytic converter. I guess the converter smell can be the result of raw fuel getting into the converter. Check this for me. After driving the vehicle, leave it running with the parking brake on and in park. Check to see if the catalytic converter is red hot.
Let me know what you find.
Tuesday, November 26th, 2013 AT 8:51 AM