can be contaminated fuel or a faulty cat converter, do you have any fault codes? not all codes will set a MIL so a scan is advised.
Oct 28, 2012 at 2:46 AM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.