If i undo the oil cap with the engine running there is a very funny sound like a ruptured duck, any ideas what apart from a duck is causing it?
Trying to download a video but not having any luck. Common sense isn't very common.
_______________________________
2007 Land Rover Freelander2 I6 hse Auto

PCV valve?

I know a way to avoid the duck noise.




Keep the oil cap on when the engine is running.


I'll get my coat.  Hyundai Ioniq 5 Ultimate. The family car.
2009 Rimini Red SE TD4. Gone.
2006 Tonga Green i6 HSE. Gone.
Audi A5 convertible, my daily driver.
1972 Hillman Avenger GT, the project.

 2009 FL2 S now gone
2011 FL2 HSE AUTO
2012 FL2 XS AUTO
2000 Kawasaki er 5