2001 GMC Safari Repair Question
Topics covered: Fuel pressure, Gas, Sensor.
Mileage: 220,000 miles.
Mileage: 220,000 miles.
Asked on April 9, 2011
Gas milage
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
Asked by hunter999Answer
Replied on April 9, 2011
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
