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Discussion Starter #1
I just bought an 88 K5... 350 tbi and at start up it blows out smoke but only after it has been sitting for an hour or so. This happend to me in my 86 truck and i had to replace the valve cover gaskets... jsut wondering if it is the same thing. i really don't know mcuh about this engine. Your help would be great.

Thanks
Troy
 

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uhhh valve cover gaskets?? or valve seals, I would say the valve seals are screwed, thats is the normal symptom.
 

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Yep, sounds like Valve guide seals. You can just drive it if its not too bad. Or, you can put on some umbrella seals to patch it up untill you do a rebuild or something.
 
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