C5 II 2005 2.0i 16V chirping noise

[Morten]

Hi, after replacement of rocker cover with gasket (today), a squealing / chirping noise is heard while engine is idling.

I found this post in the forum (to a Xantia) that had the exact same problem as I do. viewtopic.php?t=18264&start=15
They suggest it is blocked breather system.

Has anybody a drawing of the parts involved in the breather system for a C5 II 2005 2.0i 16V (EW10D/RLZ)?

Symptoms on my car:
squealing / chirping noise at idle
Taking off the oil filling cap, the noise is gone. Engine is "venting" through the cap hole. Cap back, the noise is back in 5-10 seconds.
I feel air pressure from rocker cover pipe when I remove the hose, and vacuum in the hose when removed from the cover.

Feel free to suggest other possible causes.

Thanks
Morten

[mickthemaverick]

I'm assuming this has been resolved by now, and betting it was the breather pipe?

[Morten]

Hi, it has not been resolved. The engine is working without any problems, so I just leave it until it becomes a problem. The noise is not loud so it is ok.