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oil in spark plug tubes
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  1. 2002-2006 Nissan Altima Discussion (2.5 & 3.5)
    I was in the process of replacing plugs + ignition coils, and discovered what appears to be a common issue with this engine (and probably many other similar engines) -- bad spark plug seals in the valve cover, and LOTS of oil collected in the plug tubes/wells. Of course, the only way to repair...
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