1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

Blue Exaust

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Old 06-21-2005, 10:32 PM
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Default Blue Exaust

Today, I went to pass a friend in her pickup. I went WOT @ 35 mph and held untill 90mph. She said the car was burning blue smoke. I thought the new PCV valve took care of that. I was wrong. I went to the best shop in town and they said that its "normal" for a drop or two to get past the cylinder under hard driving. He said if I did burn oil my plugs would foil very fast. My plugs look good every time I pull them. He also said that if the car runs rich enough that can cause blue smoke as well. So, is this really normal? I rarely ever see cars put out blue smoke unless they are beaters. :?
Old 06-21-2005, 10:33 PM
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Being that you were WOT I wouldn't be overly worried. Might want to drop in a can of engine restore from time to time if it continues.
Old 06-21-2005, 10:36 PM
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I don't think my car has any blue smoke when I pin it.....But I'm never behind it either.

I'm going for the fuel trim getting too hot under WOT and burning a lot to quick.

Also it wouldn't suprise me if you do get a lil blow by...I'd imagine every engine does under a **** kickin'. What weight oil you running?
Old 06-21-2005, 10:43 PM
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So gas itself can burn blue? I'm running 10w30 now that its hot. It is dyno juice though. I am feeling a lose of power since I pulled my plugs a couple days ago.
Old 06-21-2005, 10:48 PM
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Originally Posted by fantastic88
So gas itself can burn blue? I'm running 10w30 now that its hot. It is dyno juice though. I am feeling a lose of power since I pulled my plugs a couple days ago.
From what I saw the other night....I think it'* all in your head LOL

Anyways...yes too much fuel can burn blue.

And WAY too much fuel burns black smoke.

Try bumper up to 10w 40

That'* what I'm running right now.
Old 06-21-2005, 11:02 PM
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Yeah dude, chances are if it were oil, it'd happen all the time [idle to WOT]. It probably is just gas. If the can of restore fixes it, then yeah it'* oil.. but I doubt it. I've yet to see a car only have blue smoke with WOT, it'* usually black if anything.


-justin
Old 06-21-2005, 11:43 PM
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You are loosing about a quart of oil every 3000 miles if i remember right? Def oil then.
Old 06-22-2005, 12:15 AM
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You are loosing about a quart of oil every 3000 miles if i remember right?
That was my 93'. It has a oil leak thats now much worse. The LSS has a small oil leak + the possible burning of oil but doesn't seem to loose any on the dipstick. Which means i'm leaning more towards the car is just running rich.
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