2000 volvo s70 turbo pcv system

edd821 · Post by **edd821** » 14 Oct 2013, 18:51

I wonder if someone can tell me if the rubber glove over the oil filler cap is a reliable test to find out if your pcv system is clogged. I have a 2000 s70 turbo - when I put the rubber glove over the oil filler opening with the motor running, the glove blows up like a balloon. I'm told this is a fairly sure sign that there is a problem with the PCV being clogged. I tried opening the dipstick about few inches but no smoke came from the dipstick tube. I'm also told that my system is most likely really clogged. Can anyone confirm that test? Thanks.

Post by **kickin_it** » 14 Oct 2013, 19:58

This thread explains just about everything you need and includes video.
https://www.matthewsvolvosite.com/forums ... 4&p=293865

edd821 · Post by **edd821** » 14 Oct 2013, 20:04

thanks for the quick reply - I've seen Robert's videos and they're very informative. My question is: would you agree that the rubber glove test is accurate?

Post by **rspi** » 14 Oct 2013, 20:12

My dipstick did NOT smoke either but the ports in the block were pretty clogged.

Post by **rspi** » 14 Oct 2013, 20:13

Well, you could discount the test and see if the RMS blows. LOL

Post by **rspi** » 14 Oct 2013, 20:14

Oh, I almost forgot... my RMS was leaking.

edd821 · Post by **edd821** » 14 Oct 2013, 20:16

Okay, thanks........that port is really clogged badly. Mine prolly looks like that too. Thanks for your replies.

Post by **rspi** » 14 Oct 2013, 20:20

No problem man, just trying to help you keep your car on the road.

difflock54 · Post by **difflock54** » 14 Oct 2013, 20:25

The rubber glove is a self explanatory and simple, cheap and basic method to observe whether their is a vacuum or positive crankcase pressure when the engine is running. Provided it is well sealed around the oil filler opening it achieves the desired result.
The positive pressure will soon blow the seals if it gets excessively high.

edd821 · Post by **edd821** » 14 Oct 2013, 21:14

thanks all for the info on the breather system. gonna be busy tomorrow I guess.