hi, i have a 1999 express van that has a lean mixture fault code and will not pass smog because of it,it is a 350 motor
Jan 16, 2011 at 7:51 PM
will not pass smog because of lean mixsture fault code
1999 CHEVROLET EXPRESS
STEVEK
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Repair Safety Notice:
This information is for general instructional purposes only. Vehicle repair can be dangerous.
Verify all information, follow manufacturer service procedures, use proper tools and safety equipment,
and consult a qualified repair shop when needed.
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Lean fuel condition could be caused by one of the following below:
1.Vacuum leaks
2.EGR and PCV valve.
3.Low fuel pressure.
4.Dirty fuel injectors.
5.Mass Air Flow Sensor.
6.Oxygen Sensor.
1.Vacuum leaks
2.EGR and PCV valve.
3.Low fuel pressure.
4.Dirty fuel injectors.
5.Mass Air Flow Sensor.
6.Oxygen Sensor.
Jan 16, 2011 at 11:19 PM
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