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Kevin, UK Car Mechanic
Category: UK Car
Satisfied Customers: 2091
Experience:  Diagnostic technician at vw /audi specialist
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320d m sport: i had my turbo referb sum months back and

Customer Question

Hi i had my turbo referb sum months back and just took into
Bmw speacilist an they said I needed to hav my dpf do a force regen and that worked but it stil puffs out blue smoke on start up in morning and they recon it's the turbo aculator is that possible the turbo is under warrenty . Thanks***@******.*** if you can help
Submitted: 2 years ago.
Category: UK Car
Expert:  Kevin replied 2 years ago.
Hi I'm Kevin. I would say this is unlikely blue smoke is an indication of oil being burnt. There are limited choices as to cause you could has internal seal failure in turbo but this wouldn't normally show on start up more under load. The most likely is valve stem seals or a PCV valve fault causing excessive crankcase pressure