what if you get a tune up and they say oil was on the old spark plugs

Asked by Aug 02, 2016 at 10:14 PM about the 1999 Toyota Corolla LE

Question type: Maintenance & Repair

Got a tune up and the shop said there was oil on
the old spark plugs

1 Answer

222,925

On the electrode side? Worn piston rings or valve guides will do that. Meaning an engine rebuild or replacement. Oil on the outside? a leaky valve cover gasket.

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