1992 Chevy Caprice

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

black smoke from tailpipe
Friday, April 16th, 2010 AT 12:51 PM

1 Reply

Tiny
RASMATAZ
  • 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.
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Friday, April 16th, 2010 AT 2:05 PM

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