Why would my number 1 and 4 spark plugs have oil on them?


Asked by Jan 08, 2015 at 10:24 PM

Question type: Maintenance & Repair

It's an 03 Nissan altima

1 Answer

The most common causes are failing oil seals in the head (s) or failing piston, oil rings. Esp. if this is a high mileaage vehicle. There are adaptors you can purchase to install your spark plugs into , then into the head, but it's really only a bandage for a potentially bigger problem in the engine.

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