2004 Vauxhall Vectra black smoke

Tiny
MEADMACHINE4
  • MEMBER
  • 2004 VAUXHALL VECTRA
  • 4 CYL
  • FWD
  • MANUAL
  • 120,000 MILES
Why would there be black smoke coming from the exhaust constantly whilst accelerating? Its a 1.9 cdti.
Tuesday, April 6th, 2010 AT 4:04 PM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
The air and fuel mixture is too rich

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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Tuesday, April 6th, 2010 AT 4:26 PM

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Black smoke being produced from the exhaust system of is a sign of too much fuel being processed by the engine.

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