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  what causes a car to smoke on startup.

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what causes a car to smoke on startup. by Mr. Pat
Started on: 12-13-2007 04:15 PM
Replies: 6
Last post by: Austrian Import on 12-13-2007 09:43 PM
Mr. Pat
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Report this Post12-13-2007 04:15 PM Click Here to See the Profile for Mr. PatClick Here to visit Mr. Pat's HomePageClick Here to Email Mr. PatSend a Private Message to Mr. PatDirect Link to This Post
title sais it. Its not common, but occasional.
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Jake_Dragon
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Report this Post12-13-2007 04:24 PM Click Here to See the Profile for Jake_DragonSend a Private Message to Jake_DragonDirect Link to This Post
Valve seals can leak and cause that.
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sc2m6
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Report this Post12-13-2007 05:31 PM Click Here to See the Profile for sc2m6Click Here to Email sc2m6Send a Private Message to sc2m6Direct Link to This Post
yes valve seals I agree gm engines were and are good for that
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James Bond 007
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Report this Post12-13-2007 05:50 PM Click Here to See the Profile for James Bond 007Send a Private Message to James Bond 007Direct Link to This Post
and I tripple that... valve seals (might want to do a compression test).
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fieroluv
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Report this Post12-13-2007 07:58 PM Click Here to See the Profile for fieroluvClick Here to Email fieroluvSend a Private Message to fieroluvDirect Link to This Post
Valve seals and valve guides cause it. If you replace the seals and it still smokes, then your valve guides would be the culprit.

edit: I guess also worn valve stems can cause it too, but it would more than likely be one of the above before it would be the valve stems.

[This message has been edited by fieroluv (edited 12-13-2007).]

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Dodgerunner
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Report this Post12-13-2007 08:53 PM Click Here to See the Profile for DodgerunnerClick Here to visit Dodgerunner's HomePageClick Here to Email DodgerunnerSend a Private Message to DodgerunnerDirect Link to This Post
Along with valve seals, how about steam from the exhaust due to the cool weather..

Just another thought... .
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Austrian Import
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Report this Post12-13-2007 09:43 PM Click Here to See the Profile for Austrian ImportClick Here to Email Austrian ImportSend a Private Message to Austrian ImportDirect Link to This Post
It seems that all fiero's I've encountered smoke on startup, some more than others.
I've also been told that it's oil burning off, not sure that it's true.

To test compression, one has to remove spark plugs, correct? Is there another method?
junk yards always quote compression, is that a good way to tell the shape of the engine, or just a marketing gimmick?
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