Page 1 of 1
2004 BMW 745Li - Oil Consumption
Posted: Mon May 16, 2011 12:11 pm
by Princeton Auto
'04 BMW is using oil. After vehicle has been idling for a short time as if at a stop light. Upon acceleration, blue smoke can be seen. Typically we would suspect valve stem seals, and I have seen this problem with PCV systems as well.
But on this particular vehicle, I am suspicious that it may be something other than an internal component failure. Mileage is 101K...
Any suggestions??
Re: 2004 BMW 745Li--Oil Consumption
Posted: Mon May 16, 2011 12:21 pm
by jbadenoch
why are you not suspecting internal eng issue or pcv? how much oil is it consuming?
Re: 2004 BMW 745Li - Oil Consumption
Posted: Mon May 16, 2011 12:54 pm
by ricmorin
How much oil is it using? Any external leaks? Have all the PCV updates been performed? Has the non-return valve campaign been performed? What is the crankcase pressure? Have you checked the pressure control valve?
Re: 2004 BMW 745Li - Oil Consumption
Posted: Tue May 24, 2011 8:28 am
by Princeton Auto
Sorry it has taken so long to get back to you on this topic. With all of your suggestions, I am going to refer this vehicle to a shop with more experience on these vehicles. Customer satisfaction is more important than saving face. It's out of our spectrum of expertise.
Thanks for your advice.