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Does it mean end? Oil on the bottom of Spark Plug


Naitian Wang
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Hey, I'm quite worry about a lot of oil covering the threads and bottom of the middle two spark plugs. The other two are good. I heard that if oil on the bottom, it means mechanical issue and may need expensive repair.

 

I replaced valve cover gasket today. After I pulled the valve cover, there was just a little oil on the top part. After I unscrew the plug, the threads and bottom was covered by oil.

 

I think I will check them again tomorrow or after drive a while. Car runs fine. No engine light on. But I'm thinking about it. Anyone have any ideas? I'm on a tight budget, can't bring this to a mechanic. Its a 2007 fusion, 2.3l. Thanks!

Edited by Naitian Wang
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  • 4 weeks later...

Im having the same issue with my 2.3. it has a clattering sound coming from the head when its warm. (kind of sounds like a quiet diesal) and it knocks noticably when its warming up. between 12-1300 Rpm.
I found out that the last time the oil was changed 5w-30 was put in it. (never going there again), i pulled three plugs 2 had threads covered in oil, the other was dry.
Im wondering if you guys have any ideas on this one, ive heard that running anything other than 5w20 can damage the cam lobes.
if this is the case is it something i need to fix right away or do i have a few thousand miles.

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  • 3 weeks later...

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