1994 Nissan Truck Won't pass smog inspection High NOX emiss

Tiny
MARK DENNES
  • MEMBER
  • 1994 NISSAN TRUCK
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 163,000 MILES
Got any fairly inexpensive tips? And is there anyway to tell if NOX emissions are being reduced without expensive testing equiptment? Thanks
Monday, January 14th, 2008 AT 7:37 PM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
There's an emission control device in your system called EGR its primary purpose is to reduce oxides of nitrogen-check it out might not be opening due to carboned-up.
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Wednesday, January 16th, 2008 AT 10:18 PM

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