LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

Oil coming out of Exhaust #8 PICS

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Old Aug 8, 2008 | 11:38 AM
  #1  
Mtxz453's Avatar
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From: Clifton, NJ
Angry Oil coming out of Exhaust #8 PICS

I finally have most of the engine together and I'm going to clean the head to put the header back on and I see oil in and around the exhaust. Every single one of of the other exhaust chambers are dry as anything. Could this be from bad rings on the piston? When I did the springs, the valve was fine, everything went normal. Before I took everything apart, the car ran awsome. I've been turning the egnine upside down a bunch of times to do the oil pan gasket etc, could it just be from that? This really sucks..
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Old Aug 8, 2008 | 12:11 PM
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There is oil on the sparkplug tip but I checked the header and there is no oil in the header whatsoever..
Old Aug 8, 2008 | 04:23 PM
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could be a bad valve seal. Check your oil drain hole and make sure it's clear
Old Aug 9, 2008 | 10:50 AM
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well if it was a valve seal, wouldn't the valve be soaked in oil also? I just replaced all of the valve seals and i double checked it and its fine.
Old Aug 9, 2008 | 11:53 AM
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With oil all over the top and back side of the head it certainly looks like your valve cover gasket is leaking,, how would oil get all over the outside of the head from any internal defect??
Old Aug 9, 2008 | 11:58 AM
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Intake gasket can do that as well.

After I removed my heads and put them back on, I chased an oil burning problem in cyl #8 for a few weeks. Ended up replacing the intake seal again, and it resolved it.

Thomas.
Old Aug 9, 2008 | 12:18 PM
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the exhaust valve is dry, it's a valve cover gasket leak
Old Aug 10, 2008 | 11:21 PM
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ok cool thanks guys
Old Aug 11, 2008 | 05:36 AM
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sure looks like valve cover from the pics.

Exhaust valve is all smooth and white/grey and not all clumpy/black like you would see with oil in there.

The 3rd pic looks like there is oil on the exhaust floor. Is that from you rubbing oily fingers in port or just a reflection making ity look shiny? If oil was in there when you removed the header, it would also have to be an exhaust leak at the header gasket as well as the valve cover leak to allow oil to be in there. If the headerw as clean inside as well, that should not be oil.

Lloyd
Old Aug 11, 2008 | 06:28 PM
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red 95 z28 lt1's Avatar
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the real question is.... does your engine have blue smoke coming out of the exhaust pipes, on start up or when its ideling for a while and you rev it? if not then all is good and its prob a intake or valve cover leak
Old Aug 11, 2008 | 09:40 PM
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From the picture, it should be obvious!
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