Back Pressure????
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Junior Member
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Back Pressure????
1998 V70 2.0 liter turbo. PCV is clear and clean but there is oil around the filler cap plus it fails the glove test.
Could it be back pressure from the exhaust, clogged catalytic converter OR???
thanx, Endangered
Could it be back pressure from the exhaust, clogged catalytic converter OR???
thanx, Endangered
Senior Member
Joined: May 2012
Posts: 1,988
Likes: 52
From: Kingsport, TN
In the USA we don't get the 2.0, but on the 2.3, there really is not a source of vacuum connected to the PCV. The PCV discharges into the air duct upstream of the turbo.
As a result, I have very low expectations of the glove test on the 2.3. There could be a tiny bit of draft, but as blowby increases over the life of the engine, at some point I think it can't keep the pressure negative.
As a result, I have very low expectations of the glove test on the 2.3. There could be a tiny bit of draft, but as blowby increases over the life of the engine, at some point I think it can't keep the pressure negative.
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Mar 27, 2021 05:44 PM