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03 Chevy puge valve

Tiny
WOODYODA
  • MEMBER
  • 2003 CHEVROLET SILVERADO
  • V8
  • 2WD
  • AUTOMATIC
  • 204,000 MILES
03 chevy silvarado 5.3. Can the evap purge valve cause a lean mixture code? My truck has no egr valve. My guess is the purge valve took it place.
Thursday, December 23rd, 2010 AT 1:47 AM

3 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
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.
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Wednesday, October 31st, 2018 AT 6:56 PM
Tiny
WOODYODA
  • MEMBER
  • 4 POSTS
Thanks for the reply but my truck has no egr valve. Part of my question was does the evap purge valve serve the same purpose?
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Wednesday, October 31st, 2018 AT 6:56 PM
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Exhaust gas recirculation has nothing to do with fuel vapors
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Wednesday, October 31st, 2018 AT 6:56 PM

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