he/she drowns a lot of black smoke

1994 CADILLAC DEVILLE CONCOURS
160,000 MILES • V8 • FWD • AUTOMATIC
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CARLOS MORA
  • MEMBER
  • 2 POSTS
my cadillac 1994 is installed or motor of 1996 norstart and flaw the gasoline drowns and be he black smoke and he/she goes out
Feb 23, 2011 at 1:38 AM
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RASMATAZ
  • CAR REPAIR CONTRIBUTOR
  • 75,992 POSTS
Probable causes of an engine running rich are as follows:

1.Excessive fuel pressure can be cause by restricted fuel return line
2.Defective Oxygen Sensors.
3.Leaking injectors and fuel pressure regulator.
4.Coolant temperature sensor out of calibration.
5.Restricted air intake system.
Feb 23, 2011 at 7:33 AM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.