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Oil Dripping out of Spark Plug Hole
I recently rebuilt the motor. A 1991 3.6 964 and replaced seals, gaskets, bearings, oil tubes, freshened up the heads with new valve springs and guides. Kept original p and Cs but did replace the piston rings.
Oil still sweats at the left side valve cover and was dripping from the right hand side valve covers. After removing the exhaust and re sealing the gasket covers, I still found some oil dripping out of the number 6 spark plug (lower one). Any idea what this might be from? Thanks! |
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Senior Advisor
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Only a couple sources of the oil, past the valve guides or past the rings. Do a leak-down test to rule out the rings. You could drop the header on that side to check the exhaust valve guides. But that might be inconclusive. Not what you want to hear, sorry.
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08 Cayenne Turbo |
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Rocker shaft leak?
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Steve Sapere aude 1983 3.4L 911SC turbo. Sold |
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Is the leak in the "vicinity" of the #6 spark plug or does oil leak out of the hole when you remove the plug? Two totally different problems. If it's in the vicinity it could be many different things. The fans air will push oil all over the place and end up far from the leaks origin. I would look at the following;
1. Gasket between cam carrier and tower (the part with the o-ring that's part of the chain box under the cam sprocket.) 2. The o-ring on the cam carrier. 3. Rocker shafts. 4. Cylinder base gasket.
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Tell it like it is or don't tell it at all. |
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I'm assuming when he said oil coming from the spark plug he looked in the cylinder with a light/mirror and verified there is oil in the cylinder. If not, then yes suspect what Lindy said.
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08 Cayenne Turbo |
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Join Date: Apr 2010
Location: Houston, Tx
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Porsche Tech
Join Date: Apr 2011
Location: Canada Ontario
Posts: 2
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oil leak
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