1986 Mercedes Benz 300 black smoke at idle

1986 MERCEDES BENZ 300
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CANOTURBA
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Engine Performance problem
1986 Mercedes Benz 300 6 cyl Two Wheel Drive Automatic

mercedez benz
Aug 25, 2010 at 11:49 PM
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RASMATAZ
  • ✓Experienced Mechanic
  • 75,992 POSTS
Check the injectors if its diesel-Gas 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.
Aug 26, 2010 at 6:41 AM
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