# What causes PCV fails quickly?

**URL:** <https://community.cartalk.com/t/what-causes-pcv-fails-quickly/175479>\
**Category:** Maintenance/Repairs\
**Tags:** integra, acura\
**Created:** [March 1, 2021, 12:22am UTC](https://community.cartalk.com/t/what-causes-pcv-fails-quickly/175479 "2021-03-01T00:22:44Z")\
**Posts on this page:** 1\
**Showing post:** 61

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**Author:** ![It\_s-Me](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/it_s-me/32/12660_2.png) [@It\_s-Me](https://community.cartalk.com/u/It_s-Me)\
**Post date:** [March 5, 2021, 10:21pm UTC](https://community.cartalk.com/t/what-causes-pcv-fails-quickly/175479/61 "2021-03-05T22:21:39Z")

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> [@Are the Cap/Rotor still good?](https://community.cartalk.com/t/are-the-cap-rotor-still-good/175532/6):
>
> 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 ?

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