Re: Interesting blue smoke issue. - Saab 9000 Bulletin Board - Saabnet.com
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Re: Interesting blue smoke issue.
Posted by Señor Don [Email] (more from Señor Don) on Wed, 21 May 2014 18:54:07
In Reply to: Interesting blue smoke issue., jjacob, Fri, 16 May 2014 08:33:51
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jjacob,
Pardonne moi! Don't know HOW I overlooked your NA engine! DOH!
Anyway, great compression, but nothing to do with your blue smoke.
Excess fuel will show as black smoke, water/coolant will blow white smoke, but BLUE smoke out the exhaust is oil. I believe the valve stem seals are the cause. The cold temperatures shrink their sealing capability, thereby allowing oil in the head to leak past them and puddle on the valve seat or the piston head if the valve is off it's seat. the warmer temps allow the stem seals to restrict the oil in the head from flowing past them, as they are slightly more pliable.
Solution? Valve job.
Happy SAABing!
posted by 69.247.253...
Posts in this Thread:
- Interesting blue smoke issue., jjacob, Fri, 16 May 2014 08:33:51
- Re: You can always do the test..., Street, Mon, 2 Jun 2014 03:07:42
- Re: Interesting blue smoke issue., Señor Don, Wed, 21 May 2014 18:54:07 <-- Viewing This Message
- Re: Interesting blue smoke issue., BobS, Fri, 16 May 2014 22:17:55
- Re: Interesting blue smoke issue., Simon S, Fri, 16 May 2014 09:43:05
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