1992 Chevy Caprice

1992 CHEVROLET CAPRICE
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HAKIM MARTINEZ
  • MEMBER
  • 1 POST
Smells problem
1992 Chevy Caprice V8 Front Wheel Drive Automatic

black smoke from tailpipe
Apr 16, 2010 at 5:51 AM
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RASMATAZ
  • ✓Experienced Mechanic
  • 75,992 POSTS
Probable causes of an engine running rich are as follows:

1.Fuel pressure not within specs.Can be cause by restricted fuel return line or defective fuel pressure regulator.
2.Defective Oxygen Sensors.
3.Leaking injectors.
4.Coolant temperature sensor out of calibration.
5.Restricted air intake system.
Apr 16, 2010 at 7:05 AM
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