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1997 Cadillac Deville Rough Start - Oil on Spark Plug

Tiny
CLIFFY
  • MEMBER
  • 1997 CADILLAC DEVILLE
  • V8
  • 2WD
  • AUTOMATIC
  • 150 MILES
Car was starting rough so I changed the plugs and the wires.

While doing so I noticed oil on the #6 plug

Is this the problem and what does oil on the plug mean?
Sunday, April 26th, 2009 AT 11:07 AM

3 Replies

Tiny
DOCFIXIT
  • MECHANIC
  • 18,828 POSTS
Was oil on the electrode? If yes worn valve guides or worn oil ring.
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Sunday, April 26th, 2009 AT 2:22 PM
Tiny
CLIFFY
  • MEMBER
  • 2 POSTS
Oil on thread not electrode
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Sunday, April 26th, 2009 AT 2:58 PM
Tiny
DOCFIXIT
  • MECHANIC
  • 18,828 POSTS
Then you have a valve cover leaking oil down on plug.
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Monday, April 27th, 2009 AT 3:51 PM

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