plugs

Discussion in 'Technical' started by Newmavman, Jul 10, 2006.

  1. Newmavman

    Newmavman Member

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    What can be the problem when you have plugs that are all black and some of them have oil on them?
     
    Newmavman, Jul 10, 2006
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  2. CornedBeef4.6L

    CornedBeef4.6L no longer here

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    Could be several issues. bad valve guides, piston rings pertaining to the oil. The black could be carbon build up and be associated with a rich fuel mixture.
     
    CornedBeef4.6L, Jul 10, 2006
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