How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask Roger Your Own Question
Roger, BMW Master Tech
Category: BMW
Satisfied Customers: 3044
Experience:  10 yrs. experience as BMW Master Technician, shop foreman and dealer.
Type Your BMW Question Here...
Roger is online now
A new question is answered every 9 seconds

Bmw 750li awd twin turbo: Blue smoke at start from my twin

Customer Question

Blue smoke at start from my twin turbo motor
when idling for a while hit gas blue smoke also ?
Submitted: 1 year ago.
Category: BMW
Expert:  Gary replied 1 year ago.
Hello there,Can you give me some info, service history, any modifications, how the car is driven, how often it is driven etc.Blue smoke is engine oil, more than likely in the engine breather system.Some ducting needs to be removed to determine the cause, generally high blowby from worn piston rings.Gary
Customer: replied 1 year ago.
Service regulary no modifications the car did sit for 3 days
Customer: replied 1 year ago.
Car has 76000 miles on it should i pull the air cleaners and check for oil
Expert:  Gary replied 1 year ago.
How many miles now?Sitting for 3 days should not cause any harm.The first thing to is remove the duct at throttle body and inspect inside for oil residue.I have worked on many cars that have large volumes of oil in the ducting, including one of mine, for which I've just spent 10k on an engine rebuild, new turbo etc.Gary
Expert:  Gary replied 1 year ago.
Hi again,I'm not set up for international phone calls, I'm in Australia.I will open the question for other Techs who may be able to provide further assistance.Kind regards Gary
Customer: replied 1 year ago.
Ok thanks