2002 Chevy Venture high NOx Nitrogen Oxide level

Tiny
THERABBITMAN
  • MEMBER
  • 2002 CHEVROLET VENTURE
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 55,000 MILES
Hi there!

I just failed my smog inspection- they said that the NOx level is just a little too high. What might cause this and how can I reduce it?
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Monday, January 7th, 2008 AT 4:34 PM

1 Reply

Tiny
BMRFIXIT
  • EXPERT
Check and clean EGR valve
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Monday, January 7th, 2008 AT 5:06 PM

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