Runs rich

1987 VOLKSWAGEN CABRIOLET
127,000 MILES • 1.8L • 4 CYL • 2WD • AUTOMATIC
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BUFFALOPHIL1948
  • MEMBER
  • 1 POST
Cannot get it to pass emissions. Running too rich. Is there a hotter plug and wires that could be used to help this?
Oct 29, 2017 at 8:43 AM
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MHPAUTOS
  • AUTOMOTIVE REPAIR CONTRIBUTOR
  • 31,937 POSTS
This will not help emissions, you first need to see if the O2 sensor is working, a faulty O2 sensor will default to rich, a live data read will show the activity of the sensor, get this checked first.
Oct 31, 2017 at 8:00 PM
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