508 Hybrid - replace valve cover and condenser

This is the Forum for all your Peugeot Technical Questions, Problems or Advice.
deeps452
Posts: 3
Joined: 23 Jun 2025, 13:44

508 Hybrid - replace valve cover and condenser

Unread post by deeps452 »

Hello gentlemen.

I’ve been faced with a very expensive repair on my 508 hybrid. Apparently, it was caused by a leaking valve cover. Oil from the leak has dissolved a drive belt, which then got wrapped around pulleys and tensioners, causing extensive damage to these components.

Is it correct to assume that crankcase ventilation takes place via a valve in the valve cover, and that this valve could be blocked, causing oil to be forced out through the gasket on the valve cover?

John...
User avatar
mickthemaverick
Moderating Team
Posts: 20114
Joined: 11 May 2019, 17:56
x 7793

Re: 508 Hybrid - replace valve cover and condenser

Unread post by mickthemaverick »

That is a reasonable assumption John but it is an assumption!! Have a look at this and it will clarify the purpose of the PCV valve and give you a better understanding of what may be happening: https://www.ancel.com/blogs/news/pcv-va ... replace-it
I used to be indecisive, now I'm not so sure!
I used to ride on two wheels, but now I need all four!
deeps452
Posts: 3
Joined: 23 Jun 2025, 13:44

Re: 508 Hybrid - replace valve cover and condenser

Unread post by deeps452 »

Would you by any chance know the torque for fastening the rocker cover?