My 325 CI produces smoke when it first starts. It has recently had a tune up and had the injectors cleaned. Is there a common problem that causes smoke at start up?

Asked by Nov 17, 2012 at 12:20 PM about the 2005 BMW 3 Series

Question type: Maintenance & Repair

4 Answers

What color smoke? Black=unburnt fuel, bluish/gray/white, oil, or water from condensation

1 out of 1 people think this is helpful.
4,155

If the vehicle runs rough as well at start up, then you will need to check crankcase pressure. Simple to do with the engine running remove the oil cap it should take a light amount of force to remove. If it is hard to pull off then your oil seperator under the intake manifold has failed and will need to be replaced. This is really common for this vehicle and there is a upgraded kit for the vehicle, depending on if you already have it or don't. The updated kit is foam insulated to help prevent failures in cold temperature. This is of course a diag not in person and could be some other issue completely like piston rings leaking, valve stem seals leaking. But this is where I would start, hope it helps.

285

could possibly be Valve seals leaking Oil onto the pistons when the Engine is at rest. Run a compression test

10

My BMW 3 series smokes up slightly when start up!! How big the problem is it anything to do with engine, can it be sorted or it's end of the car?

1 out of 1 people think this is helpful.

Your Answer

Add photo

Related Questions

3 Series

Looking for a Used 3 Series in your area?

CarGurus has 40,930 nationwide 3 Series listings starting at $1,250.

ZIP:

Search BMW 3 Series Questions

BMW 3 Series Experts

#1 Tom Demyan
Tom Demyan
Reputation 4,030
#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
632 Great Deals out of 17,691 listings starting at $1,500
Used BMW M3
77 Great Deals out of 2,162 listings starting at $3,495
Used Mercedes-Benz C-Class
976 Great Deals out of 32,718 listings starting at $1,950
Used Audi A4
343 Great Deals out of 13,166 listings starting at $1,599
Used Ford Mustang
678 Great Deals out of 38,414 listings starting at $1,963
Used Mercedes-Benz E-Class
730 Great Deals out of 22,788 listings starting at $1,600
Used BMW X5
573 Great Deals out of 16,835 listings starting at $2,788
Used BMW 7 Series
180 Great Deals out of 5,840 listings starting at $1,600
Used Honda Accord
1,187 Great Deals out of 77,640 listings starting at $969
Used BMW 6 Series
115 Great Deals out of 3,232 listings starting at $7,495
Used BMW X3
307 Great Deals out of 13,215 listings starting at $2,295
Used Lexus IS 250
377 Great Deals out of 5,895 listings starting at $4,950
Used BMW 1 Series
133 Great Deals out of 1,768 listings starting at $5,800

Used Cars For Sale

2017 BMW 3 Series For Sale
7,643 listings starting at $32,085
2016 BMW 3 Series For Sale
175 Great Deals out of 7,657 listings starting at $23,500
2015 BMW 3 Series For Sale
48 Great Deals out of 1,152 listings starting at $14,999
2014 BMW 3 Series For Sale
182 Great Deals out of 2,813 listings starting at $15,695
2013 BMW 3 Series For Sale
471 Great Deals out of 6,389 listings starting at $10,995