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Forum namePerformance/Engine
Topic subjectValve steam seal or leaky turbo?
Topic URLhttps://forums.2gnt.com/dcboard.php?az=show_topic&forum=i5&topic_id=62079
62079, Valve steam seal or leaky turbo?
Posted by JustOne, Oct-24-03 06:50 PM
Well I have a small stream of smoke out the tailpipe. I know for sure its oil but from where I don’t know. I of course did the obvious and checked the compression and found that all the cylinders are dead even so its not the rings or a blown gasket. Im thinking that it is one of two things. Valve steam seal or leaky turbo. It isn’t a large amount of smoke and the only time you can see it is at idle and even then it evaporates off about three feet off the tail so its not a huge leak (yet). When I start the car it won’t smoke for about 5 min of idling. What’s your opinion valve steam, leaky turbo or other?

TIA
Brian
62080, RE: Valve steam seal or leaky turbo?
Posted by taloniized, Oct-24-03 07:22 PM
I have the same problem and i am now changing the head.
62081, RE: Valve steam seal or leaky turbo?
Posted by Michael_97RS, Oct-24-03 07:29 PM
Only way to know is take a look. Pull the turbo and check for play.
Pull the exhaust manifold and look at the valve stem seals you'll see the valve stems wet if the seals are leaking.



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62087, RE: Valve steam seal or leaky turbo?
Posted by HadesOmega, Oct-24-03 10:01 PM
hmm whats your vacuum like? Does the needle shake at idle. If it does it's probably your valve stem seals. I replaced mine and it seems to have worked, the needle doesn't shake as much. i probably just have some kinda vacuum leak now.