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Spark Plug O Rings On A 03 996

soverystout
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soverystout Member

soverystout

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When I changed out my spark plugs a few months ago, I noticed one of the old plugs (on the passenger side) had oil driping off of the threads after I pulled it out.

When I start the car (after letting it sit overnight) I get a small plume of smoke from the exhaust on the same side.

Has anyone had the o rings replaced on a 02 and newer 996? I know the setup is far different on the earlier 996s.

Youhave to access these o rings by removing the valve covers as opposed to pulling the spark plug tubes when changing the plugs.

Anyone have a ballpark guess on $$$ at the dealer to replace? Should/could it be covered under CPO?

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soverystout Member

soverystout

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A MY03 should have the newer oil tubes - no o-rings. Was the plug fouled with oil? If so, you may have a larger problem.

Newer o rings meaning they don't go bad? Plug wasn't fouled but it was the only plug that had a little bit of oil drip from the threads.

All the other plugs looked just like the wet plug except for the fact that they were dry.

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Loren Member

Loren

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The 3.6 liter engine had the oil tube returns re-designed - there are no o-rings (I corrected my post above).

If it was a little oil then I would not worry as in that case perhaps the spark plug was not tightened or the spark plug gasket failed.

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soverystout Member

soverystout

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The 3.6 liter engine had the oil tube returns re-designed - there are no o-rings (I corrected my post above).

If it was a little oil then I would not worry as in that case perhaps the spark plug was not tightened or the spark plug gasket failed.

I spoke with one of the parts guys at Sunset. The 3.6 does have a set of orings but they are not accessible from the spark plug, you have to remove the valve covers.

I wish your theory of a spark plug seal was possible. Even after I changed and correctly seated the plugs, when i start the car after sitting (just overnight) I get a quick small plume of exhaust smoke from the passenger side exhaust. I also use 1 bar (electronic readout on the dash) worth of oil after a day of driving.

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