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Spark plug #6 has oil in spark plug well

Help, Advice, Owners' Discussion and DIY Tutorials on the Volvo S80 model. Sometimes called an "executive car", the S80 was and continues to be Volvo's top-of-the-line passenger car.
MATEO7788
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Spark plug #6 has oil in spark plug well

Post by MATEO7788 » Mon Jan 23, 2017 2:26 am

Hi I have a 2000 s80 2.9 with about 198,000 and just changed out the spark plugs and when I got to #6 it had oil in the spark plug well. The car runs fine with one check engine code for a o2 censor, get about average gas mileage. I'm wondering if this is somthing serious or if it could be just a bad oil cap seal or run off oil because of it the only one having oil and its right in front of the oil fill cap?

ThommyKent
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Re: Spark plug #6 has oil in spark plug well

Post by ThommyKent » Tue Jan 24, 2017 10:36 pm

It`s for sure just oil from someone being sloppy filling oil

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Re: Spark plug #6 has oil in spark plug well

Post by ThommyKent » Fri Jan 27, 2017 7:50 pm

You`re welcome.

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Roger_850T
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Re: Spark plug #6 has oil in spark plug well

Post by Roger_850T » Tue Jan 31, 2017 8:25 pm

I would agree, likely sloppy filling. Also, the rubber gasket in the filler cap gets dry and brittle; replacements are cheap (under $1 if you buy carefully,) I just replace them every 3rd oil change. I'd clean it, replace the gasket, and see if the issue comes back.

Roger
'05 XC90 V8 140k
'95 854T 310k
'02 V70 159k
'03 S80 111k (crashed)
'93 945T 217k (gone to be parted out)
'87 245 300k+ sold, still going
'84 264 Diesel, RIP at 160k
'78 242 manual everything.
'73 P1800ES, fun until the rust set in...

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