2008 Hyundai Starex Black smoke from exhaust

2008 HYUNDAI STAREX
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ABUTEBA2003
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2008 Hyundai Starex 4 cyl Two Wheel Drive Manual

Dear Sir,

Please help me about the reasons for the emergence of black smoke from the exhaust and what are the methods of treatment.

Thanks and best regards
Sep 3, 2010 at 5:09 PM
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RASMATAZ
  • ✓ASE Certified Mechanic
  • 75,992 POSTS
  • ASE Certified Mechanic
Probable causes of an engine running rich are as follows:

1.Excessive fuel pressure can be cause by restricted fuel return line or defective fuel pressure regulator.
2.Defective Oxygen Sensors.
3.Leaking injectors and fuel pressure regulator.
4.Coolant temperature sensor out of calibration.
5.Restricted air intake system.
Sep 4, 2010 at 5:22 AM
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