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Car Forum / Saab Cars / June 2005blue smoke
occasionally (maybe once a week or so) when i start my 2001 9-3 se i get blue smoke from the exhaust, it very quickly clears up and the car seems to be running fine, is this something to worry about and get checked out or is it just fairly normal and nothing to worry about. thanks john I took my 9-5 in for this very reason, was told by the local dealer that the turbo seals are going. I'll live with it for a while until it really goes. Tends to be more prominent when I start the car and it's been sitting in the hot sun and barely noticeable during the winter (upstate NY is cold) if your car is under warranty, get it fixed. how many miles? > occasionally (maybe once a week or so) when i start my 2001 9-3 se i get > blue smoke from the exhaust, it very quickly clears up and the car seems [quoted text clipped - 6 lines] > > john Sonds like valve seals to me. good luck papa > Sonds like valve seals to me. If it was a V4 or B engine that would be my idea too. But since the later models have hydraulic lifters, I do not think they have valve stem seals... -- MH '72 97 '77 96 '78 95 '79 96 '91 900i 16 http://go.to/saab96 > If it was a V4 or B engine that would be my idea too. But since the later > models have hydraulic lifters, I do not think they have valve stem seals... H engines (with hydraulic lifters) certainly do have stem seals. But I don't think that this is the problem in this case.  SignatureGrunff > H engines (with hydraulic lifters) certainly do have stem seals. But I > don't think that this is the problem in this case. But a puff of blue smoke after start up -is- a typical sign of worn/broken valve stem seals. -- MH '72 97 '77 96 '78 95 '79 96 '91 900i 16 http://go.to/saab96 >>H engines (with hydraulic lifters) certainly do have stem seals. But I >>don't think that this is the problem in this case. > > But a puff of blue smoke after start up -is- a typical sign of worn/broken > valve stem seals. Yes, no argument there - but for a 2001 9^3, it's far more likely to be turbo seals. SignatureGrunff >> H engines (with hydraulic lifters) certainly do have stem seals. But I >> don't think that this is the problem in this case. > > But a puff of blue smoke after start up -is- a typical sign of worn/broken > valve stem seals. Saab's do NOT need changing of valve stem seals......!! Cheers! > Saab's do NOT need changing of valve stem seals......!! Well, I can show you the broken valve stem seals that came out of my SAABs.... OK, I admit, out of a Ford V4 engine. Renewing those seals -did- cure the blue smoke on startup. SignatureMH '72 97 '77 96 '78 95 '79 96 '91 900i >> Saab's do NOT need changing of valve stem seals......!! > > Well, I can show you the broken valve stem seals that came out of my > SAABs.... OK, I admit, out of a Ford V4 engine. Renewing those seals -did- > cure the blue smoke on startup. Good, you said it yourself! It's NOT necessary to change the seals on the Saab 2,0 and 2,3-litre engines... Cheers! >>>Saab's do NOT need changing of valve stem seals......!! >> [quoted text clipped - 6 lines] > > Cheers! I never said it was necessary to change them, just that they exist. -Fred W >>>> Saab's do NOT need changing of valve stem seals......!! >>> [quoted text clipped - 10 lines] > > -Fred W Nevermind Henrik, I looked back through the thread and see that you said the very same thing. ;-) -Fred W > I never said it was necessary to change them, just that they exist. Last time I did a head gasket on a T16 900, the new gasket set came complete with stem seals. So I replaced them at the same time. The old ones didn't look bad, but were certainly not as tight as the new ones. SignatureGrunff >>Sonds like valve seals to me. > > If it was a V4 or B engine that would be my idea too. But since the later > models have hydraulic lifters, I do not think they have valve stem seals... Really? Then how do you suppose they seal the valve stems? -Fred W > Really? Then how do you suppose they seal the valve stems? An OHC engine has cam followers and hydraulic lifters sitting on top of the valve stems, covering the valve spring and valve stem, so the cam follower prevents oil from leaking along the valve stem into the inlet/exhaust port. I would think there is not much need for an extra rubber or plastic valve stem seal inside the spring. I know the 8v OHC engine has those seals - but no hydraulic lifters. SignatureMH '72 97 '77 96 '78 95 '79 96 '91 900i > occasionally (maybe once a week or so) when i start my 2001 9-3 se i get > blue smoke from the exhaust, it very quickly clears up and the car seems to > be running fine, is this something to worry about and get checked out or is > it just fairly normal and nothing to worry about. My 2001 9-3 (75 000km) suffers from the same thing but not as often as once a week. I notice the "blue puff" maybe once or twice a month. I have the 2.0t Ecopower engine in my 9-3 and I found the below link that may explain the "Puff" http://www.abbottracing.com/2003/support/faq.htm Is this a problem with only the garret GT17 Turbocharger or are all turbos prone to the same problem? If there is a build up of sludge in the turbo forcing oil through the turbine seal, why does this puff not happen at every startup? keith |
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