Blue smoke coming out from my bmw 320d e46

Asked by Feb 23, 2016 at 01:39 PM about the 2003 BMW 3 Series

Question type: Maintenance & Repair

When I start the car quite a bit cloud of grayish
smoke comes out followed by blue smoke which
continues to come out. As soon as the enigne
warms up smoke disappears. I know it could be oil
being burned but could I Have all the possible
reasons please? Maybe its not oil at all? Also, once
someone told me that if you open the oil cap when
the car is running the oil should not spit. In this case
it does. But I have read a little but about it and
some poeple say it should spit (moving parts inside
it) and some people say it shouldnt (blowby gases).
Maybe it depends on the vehicle?

I would be greatful to receive some detailed answer.
Thank you!

5 Answers

101,375

Sounds like the valve guide seals may be leaking.

4,575

worn engine...do a compression test~ get a rebuild...at least new piston rings and hone~

101,375

Also a pcv acting up can sometimes cause blue smoke. That would be easier to check and repair if it's the issue.

1 out of 1 people think this is helpful.
4,575

there IS oil consumption? figured as much...when it heats up, due to expansion reduces the oil getting to where it shouldn't be~ OKAY, check the fluids...if the radiator fluid is low...suspect a cracked block...if it's OIL, like I say...may be time for an engine rebuild~

4,575

it should have at least 130,000 miles on it by now...it's had a good long life already~ invest in some work...or get a new one~

Your Answer

Add photo

Related Questions

3 Series

Looking for a Used 3 Series in your area?

CarGurus has 40,587 nationwide 3 Series listings starting at $1,350.

ZIP:

Search BMW 3 Series Questions

BMW 3 Series Experts

#1 Tom Demyan
Tom Demyan
Reputation 4,000
#2 Robert Charlson
Robert Charlson
Reputation 1,380
#3 Matt Mankinen
Matt Mankinen
Reputation 1,120
View All

Related Models For Sale

Used BMW 5 Series
642 Great Deals out of 17,675 listings starting at $1,500
Used BMW M3
77 Great Deals out of 2,183 listings starting at $3,495
Used Mercedes-Benz C-Class
930 Great Deals out of 32,459 listings starting at $2,497
Used Audi A4
338 Great Deals out of 12,845 listings starting at $1,995
Used Ford Mustang
691 Great Deals out of 38,146 listings starting at $1,750
Used Mercedes-Benz E-Class
705 Great Deals out of 22,860 listings starting at $1,500
Used BMW X5
570 Great Deals out of 16,652 listings starting at $2,788
Used BMW 7 Series
189 Great Deals out of 5,841 listings starting at $3,599
Used Honda Accord
1,188 Great Deals out of 77,674 listings starting at $969
Used BMW 6 Series
111 Great Deals out of 3,191 listings starting at $7,495
Used Chevrolet Camaro
645 Great Deals out of 39,147 listings starting at $2,995
Used BMW X3
293 Great Deals out of 12,940 listings starting at $2,295
Used BMW 1 Series
135 Great Deals out of 1,755 listings starting at $5,800

Used Cars For Sale

2017 BMW 3 Series For Sale
7,350 listings starting at $31,096
2016 BMW 3 Series For Sale
160 Great Deals out of 7,685 listings starting at $23,500
2015 BMW 3 Series For Sale
54 Great Deals out of 1,141 listings starting at $15,995
2014 BMW 3 Series For Sale
184 Great Deals out of 2,739 listings starting at $14,500
2013 BMW 3 Series For Sale
485 Great Deals out of 6,416 listings starting at $11,500