Like, What the hell are valve cover breathers for?

[Be4u]

Like, What the hell are valve cover breathers for? What is their purpose.

[Recklessrob]

They help relieve crankcase pressure. The PCV (positive crankcase ventillation)
valve applies a small amount of vacuum to the crankcase, and the breathers provide an air path into the crankcase when blowby is low.

[Be4u]

Got it.

[Turbo Archie]

I think they are really there to aid the valve covers in spewing oil on the headers

[Be4u]

my covers have a grommit cup type thing that the breathers fit into. I think it would greatly reduce any chances of that. Thank gawd!

[Recklessrob]

I think they are really there to aid the valve covers in spewing oil on the headers

 :rofl;  Thats the case when you run high milage cars. :supz:

[Be4u]

I think they are really there to aid the valve covers in spewing oil on the headers

 :rofl;

[87natty]

All your gaskets and seals are dried out and beat to shit.

[Turbo Archie]

Blow by

[Recklessrob]

You're both right !  :smt038

[Turbo Archie]

I think they all have blow by.