questions after boost leak test

[2GSpeed]

so i did a boost leak test and it seems that air is coming out of my valve cover breather and when i took the oil cap off there was definatly pressure in there... are my valve seats going head gasket or what could cause this

 

[SlowSpyder]

Its your piston rings. One question though, did you do the test when the car was at operating temp?

 

[oldman]

1. Move the tester to the TB elbow. If leaking stops, air is leaking through turbo seal>oil return>oil pan. This is normal under a static pressure test as long as it's not leaking oil during operation. If problem persists, go to 2.

2. Disconnect the pcv hose from intake manifold and plug up the nipple on the IM. If problem solved, replace the pcv with an OEM one. If problem persists, go to 3. Hell, replace the pcv anyway.

3. Perform a dry/wet compression test, this will tell you if air is getting past the rings. If compression checks out, you're probably leaking air through the valve seals.

 

[RamenPride]

it's most likley a leaking PCV. I panicked at first when I heard air under the valve cover, but then plugged up the hose going from the intake manifold to the PCV and it held pressure.

 

[SlowSpyder]

whoops, I thought it was a cylinder leakage test. Sorry about that

 

[2GSpeed]

yeah i also did a compression test and leak down test 3 days prior and my compression was around 150 154 on each cylinder and the leak percent was only 2 i am going to try the pcv now..