FAILED EMMISSION TEST HC AT 2500 708.

  • Tiny
  • Anonymous
  • 1993 FORD E-SERIES VAN
  • 125,000 MILES

Failed emmission test HC AT 2500 =708.6 IDLE =627.4
@ 2500 CO% 1.11 AND.87 @ IDLE. @ 2500 CO2% 8.9865 & @ IDLE 8.1391 WHAT COULD IT BE

Sunday, February 10th, 2013 AT 7:19 PM

1 Reply

  • Tiny
  • ASEMaster6371
  • EXPERT
  • 25,554 POSTS

Could be a lazy o2 sensor, rich mixture or contaminated oil. How old are the spark plugs?

Roy

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Sunday, February 10th, 2013 AT 7:36 PM

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