Gas milage

HUNTER999

MEMBER
2001 GMC SAFARI
6 CYL
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

Saturday, April 9th, 2011 AT 8:14 PM

1 Reply

RASMATAZ

MECHANIC
75,992 POSTS

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

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Saturday, April 9th, 2011 AT 11:22 PM

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