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Question

Well for the past couple of weeks i have been having alot of blue smoke coming from my exhaust. The oil is fresh with new filter, my cat is only a year old. She is going in on Friday so they can make sure i have proper pressure. I just put a new pcv valve in last night and it didn't seem to smoke nearly as much. But I'm old i may have a sticky rig, and if that's the case it will cost me 3800$ for them to do a complete rebuild. It could also be my upper intake manifold. What do you guys think? Its my 98 GA. I don't want to get rid of her, especially with how much money i have in it. That and sentimental value.

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Blue smoke is usually a sign of oil being burned up...could be bad piston rings. A compression test will give you a better idea if that's the case, I know the vacuum system alone shouldn't be causing oil to burn up.

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Compression check....... If your burning oil, its rings or valve seals. Valve seals will usually smoke when 1st fired up.


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Check your plugs first to see if there is any oil deposits on it. If only one has it then do the compression check on that one cylinder. If you just recently changed the PCV valve check to make sure that it works. Pull it out and jiggle it. If no sound present then bad PCV. It should sound like a ball bearing in there.


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>valve guide seals

GM pushrod engines always did like to eat up those seals, I know that was an issue with my high mileage 06 Chevy Express van from my old job. Went bad on my 03 Grand Am as well.

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Ok guys thanks for the input,she will get checked Friday.

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Good luck.


Valve seals are pretty likely and at least not an immediate, serious threat if that is the case.


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It was indeed the valve guides, i replaced the pcv valve still did it. 3800 to fix or to put a new motor in was 3600, so not sure what i will do about it.

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$3800 for valve guide seal replacement? Something doesn't sound right there.

Geez, at that cost you may as well do an LX9 swap. :lol:

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That's what i thought.

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That price sounds REALLY high.... time for a second opinion.

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Yeah i think i will either swap for an lx9 which would be nice, or completely rebuild my 3.1 with better components. I have already started pricing the rebuild so i think that is what i will go with.

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I have also been watching the oil level in it and it doesn't seem to be losing any at all.

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All you should need to do for bad valve guides is replace the heads and gaskets. Also wouldn't take much for your exhaust to burn blue. And if your exhaust ever smells foul like bad eggs that because you are burning coolant. And white smoke or steam is water.

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