What causes PCV fails quickly?

[It_s-Me]

@asemaster

First you have an emissions NOx failure with very low HC, now you say you have a misfire, which would actually lower NOx but give sky-high HC. What’s going on with this car?

@Nevada_545

Look at the exhaust gas report, there is no misfire, no indication of low compression.
There is nothing wrong with the PCV valve, the OP is over-examining it.

If not a compression test, what should he do ?