Attempt to pull codes from the computer-could also be one of the following causing to run rich
1. Fuel pressure not within specs. Can be cause by restricted fuel return line or defective fuel pressure regulator.
2. Defective Oxygen Sensors.
3. Leaking injectors.
4. Coolant temperature sensor out of calibration.
5. Restricted air intake system.
Saturday, January 15th, 2011 AT 2:24 AM