Mechanics

GAS MILAGE

2001 GMC Safari • 6 cylinder AWD Automatic • 220,000 miles

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
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Hunter999
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

Tiny
Rasmataz
Apr 9, 2011.


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