Pulled my plugs #6 was quite oily. What could cause this?

[JonT]

Fresh rebuild less than 5k miles old. Almost all new parts. What could be the possible causes?

964 Engine. Thanks

[PeteKz]

Pics?

[JonT]

[76FJ55]

can you get detailed pic's of the plugs? the picture you posted doesn't provide much information. the best captured plugs in that image are the ones in the very bottom left corner there the angle lets you see the electrode, but I assume those are the top plugs for 2 and 3.

[917_Langheck]

Put your dark plugs on a dark background. This will trick the camera in setting a white balance that will illustrate the dark plugs more brightly without the use of flash, and allow inspection.

[JonT]

Problem is it's at the shop currently I'll ask for more pics Monday. Thanks

[trond]

i too have similar issue. 3.2 SS with plastic intake. #6 is black/oily. I noticed there is quite a lot of oil in the intake manifold, especially in the lower resonance tube. I suspect it comes from crancase ventilation and is sucked into #6. Possibly. I don't have air/oil separator myself but will see if I can fit one in. Could be worth looking into