Do you have a check engine light and when was the last tune-up? Black smokes running rich
1. Excessive fuel pressure can be cause by restricted fuel return line or defective fuel pressure regulator.
2. Defective Oxygen Sensors.
3. Leaking injectors and fuel pressure regulator.
4. Coolant temperature sensor out of calibration.
5. Restricted air intake system.
Tuesday, September 28th, 2010 AT 5:51 PM