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Smog Check & Emissions Questions and Answers

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  Question Answered
  Will a p0401 "egr insufficient flow" code cause my 2004 f350 6.0 powerstroke to fail a california smog check even if there is no check engine light?
by Eric    10-20-2017 02:28 PM
  Is Sealant on Emission Hose or Vacuum Line Permitted?
by Jon    07-22-2017 02:08 PM
Yes (1)
  Why Did My Corvette Fail the Smog Test for High NOx?
by April    07-17-2017 03:42 PM
Yes (1)
  Mitsubishi Galant Cleaned EGR and Replaced Sensors Not Passing
by Linda    05-10-2017 08:37 AM
Yes (1)
  OBD-II Trouble Code P0403 and P0406 Exhaust Gas Recirculation Problems
by tom    04-25-2017 09:45 PM
Yes (1)
  1991 Honda Accord LX Has Dilution Problem During Smog Test
by Peter    04-12-2017 12:46 PM
Yes (1)
  Does 2002 Chevy Avalanche Have EGR Valve or Air Pump?
by andrew    11-14-2016 09:32 PM
Yes (1)
  2000 Mitsubishi Montero Sport Monitors Not Ready
by Ronald    10-11-2016 10:03 AM
Yes (1)
  Chevy Blazer EVAP Monitor Won't Run
by John    02-25-2016 11:28 AM
Yes (1)
  1986 Toyota Pickup 22R EGR Valve Replacing
by Michael    01-12-2016 01:02 PM
Yes (1)

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