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The cause is
Posted by JG (more from JG) on Tue, 16 Mar 2004 10:35:32
In Reply to: Second turbo replacement -- Help!, Steve P, Tue, 16 Mar 2004 08:50:20
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What follows is a question and answer from Abbott's faq site (abbottracing.com). I always let my 9000's idle a bit and never had a problem with turbo. Maybe the 9-5's are more sensitive, because mine seems to smoke a bit now. Also, thesaabsite's faq has a fix that does not involve a new turbo.
My SAAB 9-5 Ecopower 2.0/2.3 gives out blue smoke on startup, my dealer says I need a new Turbo - is this true?
In a great many cases this is the sad truth. SAAB selected the Garret GT17 Turbocharger because of its low inertia/low lag characteristics which allow the build-up of boost to occur very quickly from very low revs, giving the Ecopower models excellent driveability.
The problem of turbo wear and blue smoke begins to occur if the car is not allowed to idle for atleast 10 seconds (over 30 is best) before the engine is turned off following a journey, as heat soak and oil starvation around the main bearing core of the Turbocharger creates a sludge/carbon deposit around the turbine-side bearing face. Over time this deposit buildup reduces oil flow through the bearing which in turn means that engine oil is forced past the turbine seal and into the exhaust pipe - this is the cause of the blue smoke.
See our 9-5 Engine tuning pages for the solution ... A modified GT17 turbocharger.
posted by 161.185.1...
Posts in this Thread:
- Second turbo replacement -- Help!, Steve P, Tue, 16 Mar 2004 08:50:20
- Re: Second turbo replacement -- Help!, Spydah, Tue, 30 Mar 2004 09:57:59
- Re: Second turbo replacement -- Help!, Glenn, Tue, 16 Mar 2004 11:01:46
- The cause is, JG, Tue, 16 Mar 2004 10:35:32 <-- Viewing This Message
- original turbos - high miles, compaqted, Tue, 16 Mar 2004 09:28:11
- Still On Original Turbo at 142,200 Miles, Ian Glenday , Tue, 16 Mar 2004 09:10:08
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