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Smog Check & Emissions Questions and Answers

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  Question Answered
  My 1998 Honda Civic DX failed the smog check for high CO
by Marc   
Yes (1)
  Nissan Quest Failed Smog Inspection for High NOx Results
by ulises   
Yes (1)
  Pontiac Firebird failed for high NOx during smog check
by david   
Yes (1)
  1980 Toyota Pickup Failed For High NOx
by richard   
Yes (1)
  1986 Volvo GLE failed on low speed NOx
by Jonathan   
Yes (1)
  How to test EGR valve solenoid on Chevy El Camino 305 high NOx
by frank   
Yes (1)
  Honda Del Sol with aftermarket intake failed for high NOx levels.
by Matthew   
Yes (1)
  Chevrolet Malibu did not pass the smog test due to high HC
by sandy   
Yes (1)
  BMW 325i smog check did not pass due to high HC
by Jim   
Yes (1)
  Ford Mustang failed smog check do I need a certified smog check repair station?
by Ed   
Yes (1)


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