Burning oil

Asked by Sep 14, 2016 at 12:20 AM about the 2005 BMW 5 Series 525i

Question type: General

I have a 2005 BMW 525i with 120,000 miles on it. For the
past few weeks it has been blowing off blue smoke(oil)
just about every time I start the car. The amount of smoke
along with the duration of how long it last fluctuates from
time to time. Recently has gotten worse with a very large
amount of smoke every now and then. Usually burns for
about 8-15 seconds then stops. While I've had this issue
for a few weeks, I just recently got a message on my
screen saying "increases emissions. I have no clue what
the problem is..... Any idea?

5 Answers

6,525

That is your valve stem seals that are worn. (Head job) if u keep driving it, it'll plug up ur catalytic converter

92,835

So true, but you also forgot to mention it will also wipe out the O2 sensors.

237,455

Could be an engine issue as mentioned about, but the BMW use a elaborate crankcase vent system/, referred to as the CCV system. A blockage or crack in any of the hoses will allow engine oil to not get recycled through the system and you end up dumping oil into the engine, hence burning more oil. I would replace the hoses and PCV or cranckcase valve, they usually need replace in the 80-120K range.....http://www.youtube.com/watch?v=YWXtiCwRH-k

1 of 1 people found this helpful.
237,455

https://www.fcpeuro.com/products/bmw-pcv-breather-system-kit- m54-uro-m54pcv

Best Answer
21,985

You can hope Tom is right and you do not need engine work- do you have a qualified BMW mechanic? Well.........DO YOU?!

Your Answer

Add photo

Related Questions

  • Reset oil service light 1 answer

    Every 9000km you have to change oil so after changing have to reset that measure distance on screen lcd

    2014 BMW 5 Series 528i

    -

    General

  • Oh why oh why i love my 5 1 answer

    I want to hear comments/reviews from 5 series owners everywhere, all years

    BMW 5 Series

    -

    General

  • what does it mean when there is a beep followed by"13 mhr" limit 2 answers

    BMW 5 Series

    -

    General

  • 2002 525i Sport or 2003 530i Sport 6 answers

    I'm at a cross road & looking for opinions. I've found two nice BMW's CAR 1 - is a 2002 525i - Private sale 1 owner Just hit 100,000 miles. - Has maintenance records: recent work includes: new brake...

    2002 BMW 5 Series 530i

    -

    General

  • Burning oil 4 answers

    My 525xi is burning oil. Also the engine now makes more noise than when I bought it, now It has 107k miles I use 5w30 oil. Should I use a thinker oil?

    2006 BMW 5 Series 525xi

    -

    Maintenance & Repair

5 Series

Looking for a Used 5 Series in your area?

CarGurus has 15,987 nationwide 5 Series listings starting at $1,700.

ZIP:

Search BMW 5 Series Questions

BMW 5 Series Experts

#1 Tom Demyan
Tom Demyan
Reputation 2,040
#2 Michael Branan
Michael Branan
Reputation 780
#3 Robert Charlson
Robert Charlson
Reputation 690
View All

Related Models For Sale

Used BMW 3 Series
974 Great Deals out of 31,729 listings starting at $1,000
Used BMW 7 Series
188 Great Deals out of 6,134 listings starting at $2,999
Used Mercedes-Benz E-Class
416 Great Deals out of 19,904 listings starting at $699
Used BMW X5
438 Great Deals out of 16,995 listings starting at $1,999
Used BMW 6 Series
84 Great Deals out of 3,098 listings starting at $6,977
Used Mercedes-Benz C-Class
447 Great Deals out of 26,582 listings starting at $2,000
Used BMW M5
20 Great Deals out of 593 listings starting at $10,950
Used Audi A6
159 Great Deals out of 6,470 listings starting at $2,495
Used BMW M3
45 Great Deals out of 1,517 listings starting at $5,800
Used Mercedes-Benz S-Class
172 Great Deals out of 6,479 listings starting at $2,700
Used Audi A4
229 Great Deals out of 10,877 listings starting at $1,899
Used Honda Accord
813 Great Deals out of 84,287 listings starting at $1,050
Used Dodge Charger
407 Great Deals out of 28,172 listings starting at $1,988

Used Cars For Sale

2018 BMW 5 Series For Sale
278 listings starting at $52,695
2017 BMW 5 Series For Sale
3,298 listings starting at $48,888
2016 BMW 5 Series For Sale
28 Great Deals out of 1,049 listings starting at $28,999
2015 BMW 5 Series For Sale
13 Great Deals out of 384 listings starting at $22,499
2014 BMW 5 Series For Sale
181 Great Deals out of 3,837 listings starting at $16,595

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.