E46 Crankcase breather?

[BorkFactor]

I have a 1998 E46 328i, and occasionally it will make this sort of noise intermittently when moving off from a standstill, or travelling at low speeds:

http://www.youtube.com/watch?v=KQ2fE4r-htY

Note - that is NOT my car in the video and I do not take the oil filler cap off...

Does this sound like it could be the crankcase breather? If so, how difficult / expensive will it be to sort, and will driving it like that cause any problems?

Cheers

[E30M3SE]

The noise in that video is from air entering past the partialy removed oil filter cap, if he removed it all the way the noise would stop but the ar would struggle to idle as he has just introduced a large air leak.

Usual CCV issues begin with increased oil consumption,

[BorkFactor]

Ah ok, I have not noticed any increase in oil consumption at all - stays bang on where it should be and I have done over 1000 miles in the car since I bought it.

The yellow oil warning light comes on when you start it for 5-10 seconds, I thought it was just the oil level sensor but could it be related?

No problems idling or driving at all, just that sound occasionally when driving slowly.

It is definitely a noise like this:

http://www.youtube.com/watch?v=K9OQtvZ2fp0

Thanks for the reply!

[E30M3SE]

That's a air leak which maybe coming from the CCV or associated pipe work, in the first video you posted I though you were removing the cap also and getting that noise, rereading that post it says your not removing the cap...... dohhhh.

If you getting it while your driving that something is amiss.

[BorkFactor]

Will it do any damage to the car driving it for a while as it is? Will take it to a German car specialist when I head up to Aberdeen.