2000 Subaru Impreza Black smoke from exhaust.

Tiny
CHANELLE1
  • MEMBER
  • 2000 SUBARU IMPREZA
  • 4 CYL
  • AWD
  • MANUAL
  • 68,304 MILES
When I drive my car a lot of black smoke comes out from the exhaust. I don't know what's wrong with it.
Thursday, April 9th, 2009 AT 10:40 PM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Its running too rich

Possible causes include a bad O2 sensor, excessive fuel pressure (bad fuel pressure regulator or plugged return line), leaky fuel injectors, dirty air filter or restricted air inlet, or a defective coolant sensor that prevents the engine management system from going into closed loop mode.
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Thursday, April 9th, 2009 AT 10:46 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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