1986 Mercedes Benz 300 black smoke at idle

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

mercedez benz
Thursday, August 26th, 2010 AT 6:49 AM

1 Reply

Tiny
RASMATAZ
  • 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.
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Thursday, August 26th, 2010 AT 1:41 PM

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