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valve cover gaskets OR (usually more likely) the No.3 Cyl Head bolts leaking oil. Take the spark plug valley cover off and thow it out and get some aoil drain plug gaskets for the 14mm hex head bolts and retorque them on, this will solve your proble.

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14y ago
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Q: What causes oil to be on spark plugs in a 88 Toyota supra?
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