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Smog Check & Emissions Questions and Answers

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  Question Answered
  Can I Modify The Engine On An Older Smog Exempt Vehicle?
by Tim   
Yes (1)
  94 Honda Civic HB 1.5 High NOx
by Dario   
Yes (1)
  Is Sealant on Emission Hose or Vacuum Line Permitted?
by Jon   
Yes (1)
  Why Did My Corvette Fail the Smog Test for High NOx?
by April   
Yes (1)
  Mitsubishi Galant Cleaned EGR and Replaced Sensors Not Passing
by Linda   
Yes (1)
  OBD-II Trouble Code P0403 and P0406 Exhaust Gas Recirculation Problems
by tom   
Yes (1)
  1991 Honda Accord LX Has Dilution Problem During Smog Test
by Peter   
Yes (1)
  Does 2002 Chevy Avalanche Have EGR Valve or Air Pump?
by andrew   
Yes (1)
  2000 Mitsubishi Montero Sport Monitors Not Ready
by Ronald   
Yes (1)
  Chevy Blazer EVAP Monitor Won't Run
by John   
Yes (1)

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