Puff of blue smoke

[Jamieh2910]

Hi all just wondering if anyone can help please I have a bmw 318d m sport and today when accelerating there was a puff of blue smoke there are no power problems at all it's a 2010 and done 57000 I did blow down the hose from the windscreen washer towards the water tank to unblock the filter would this have anything to do with it 

[Greydog]

Morning Jamie

Welcome to the Forum, White smoke normally un-burnt fuel, Black smoke over-fueling, Blue smoke oil!! The cause could be turbo seals wearing or valve stem oil seals. Your engine is fairly low mileage and I assume serviced annually so worn valve guides or piston rings should be lower on the culprit list, I would look towards the turbo with the intercooler. Any oil in the intercooler pipes or intercooler can get sucked into the turbo result blue smoke. The turbo lives a hard life so if a turbo oil seal is wearing it could let oil by and result in blue smoke I would get it checked by someone who knows their way around diesels.

I hope this helps

Dave