oil cap pressure leak - 850 se sedan

poroman · Post by **poroman** » 10 May 2010, 02:25

I have a oil leak through the oil filler cap. There is a lot of pressure when i undo the cap. Kind of pressure when u release the radiator cap type of pressure. The ABS light came on when driving then a short time later the oil lamp warning light came on. I put oil in (realized it did not need it) and the abs lamp went off. But in a short space (minutes) the oil was spewing out the oil filler cap on a massive way.When I undid the cap it pressure realesed.

Why, what and where is causing the pressurization of the engine causing the oil to spew out??

Post by **jblackburn** » 10 May 2010, 06:16

Your PCV system is clogged up and needs to be cleaned.

This is the same reason you blew out the cam seal in your other post.

Post by **charlyW** » 10 May 2010, 06:40

agree on that. While you're at it would be good to order the cap seal chances are yours is hard and crusty from the overspill

Post by **polskamafia mjl** » 10 May 2010, 11:39

+1 for the PCV

Post by **Ozark Lee** » 10 May 2010, 20:44

Fix the underlying PCV problem before you replace the cap gasket. At least at this point it is acting as a pressure relief and it might save your RMS.

...Lee

poroman · Post by **poroman** » 12 May 2010, 01:38

Thank you to everyone that helped/contributed. Will keep you updated once I tackle this tomorrow.......... Michael

jamespacheco1 · Post by **jamespacheco1** » 04 Jun 2010, 12:43

my 1994 850 non turbo wagon has the same problem...where is the pcv and how do i replace it?

Post by **vjaneczko** » 04 Jun 2010, 12:55

James, you can do a search for fixing the PCV - there's some excellent write-ups here, including photos, and at other Volvo forums. It looks like a lot of fun and hope to do it soon myself!

Post by **polskamafia mjl** » 04 Jun 2010, 15:26

vjaneczko wrote:It looks like a lot of fun and hope to do it soon myself!

Haha...make sure to get the kit from either IPD or FCP.

Edit: One of the write ups is on the first page of the 850/s/v70 forum.

Post by **vjaneczko** » 04 Jun 2010, 17:17

polskamafia mjl wrote: Haha...make sure to get the kir from either IPD or FCP.

Is there any other source?!