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Overheating, black smoke

Tiny
ATHENE
  • MEMBER
  • HONDA CIVIC
I have a 1993 Honda Civic with 185,000 miles. Yesterday my wife told me it was idling and running "rough". I took it for a spin, at first it ran OK, but after it heated up it started running real rough and black smoke was coming from the exhaust. I also immediately noticed the temperature guage rise. The coolant/antifreeze was very low when I checked it. There was some grease/oil/grime at the radiator cap. I just replaced the radiator last summer so I do not think it is that. What else could it be?
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Wednesday, January 10th, 2007 AT 6:23 PM

3 Replies

Tiny
BRUCE HUNT
  • MECHANIC
  • 3,754 POSTS
Being low on fluid can cause a problem with engine idle. Is the oilly residue in the radiator brown/black or reddish?
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Wednesday, January 10th, 2007 AT 8:09 PM
Tiny
ATHENE
  • MEMBER
  • 2 POSTS
It is black and gritty
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Wednesday, January 10th, 2007 AT 11:30 PM
Tiny
BRUCE HUNT
  • MECHANIC
  • 3,754 POSTS
OK, with the engine running and the radiator cap off does the radiator emit bubbles. What does the oil look like?
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Thursday, January 11th, 2007 AT 7:30 AM

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