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Oil leak help!

Old Mar 8, 2016 | 09:19 PM
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Oil leak help!

1999 Porsche 911 996. This has been killing me. I have an oil leak at the base of exhaust manifold. Burning oil at that location, my first thought was spark plug tube and seals, I changed them out with new tubes and seals. Still same issue, my cam covers are dry and I can't find it leaking anywhere else. Been searching all different forums and no luck. Please help. I attached picture, this only on the passager side. Drivers side is dry.
Did I messed up the install? Used tube and seals from pelican parts, and brought the Porsche grease for $40 to lube them






 

Last edited by Jnguyen1976; Mar 8, 2016 at 09:44 PM.
Old Mar 18, 2016 | 08:10 AM
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Have you pulled the manifold and looked inside? If you have a wasted piston/cylinder wall it'll start pumping oil out the port.
 
Old Mar 18, 2016 | 08:20 AM
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Originally Posted by Chi-town
Have you pulled the manifold and looked inside? If you have a wasted piston/cylinder wall it'll start pumping oil out the port.
Yes I did.. I pulled the manifold and discovered that one of the bolts was stripped in the thread... So I ended up replacing the manifold gasket from Porsche dealer ($21.00) and ordered Helicoil to repair the stripped thread.
After installing everything back and running the engine and driving .. No more leaks. I thought someone earlier had said No oil is running near there?
 
Old Mar 21, 2016 | 12:50 PM
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Originally Posted by Jnguyen1976
Yes I did.. I pulled the manifold and discovered that one of the bolts was stripped in the thread... So I ended up replacing the manifold gasket from Porsche dealer ($21.00) and ordered Helicoil to repair the stripped thread.
After installing everything back and running the engine and driving .. No more leaks. I thought someone earlier had said No oil is running near there?
Generally exhaust header bolts are not required to thread into areas where oil is as the bolts would heat up from the exhaust manifold and cook the oil.

While I'm glad the new gasket and Helicoil have eliminated the leak sign, I suspect the leak was not oil per se but the junk that arises from combustion or improper combustion say at cold start. A combination of some oil, un-burned fuel, and water vapor. These condense out of the exhaust gases and become liquid -- after a fashion -- again, and it was those that looked like an oil leak.
 
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