That black smoke indicates a rich fuel mixture and the white usually indicates coolant getting into the combustion chamber. As far as the EGR, I can't find a specific test for it. I checked 2 online manuals. Check to see if the pintal is free and seating properly. As far as the O2 sensor, you need a live scanner that can watch the sensors reactions to different throttle positions and engine loads.
Wednesday, September 21st, 2011 AT 5:02 AM