I have a 2001 GMC, Safari, AWD, SLT. Gas milage poor, I can smell gas fumes in exhaust, what do I do to fix this
have the same problem?
Saturday, April 9th, 2011 AT 8:14 PM
Could be running too rich due to the following
1. Excessive fuel pressure can be cause by restricted fuel return line
2. Defective Oxygen Sensors.
3. Leaking injectors and fuel pressure regulator.
4. Coolant temperature sensor out of calibration.
5. Restricted air intake system