PCV valve where is it and when to replace?

[Mark300zx]

Am I right in thinking it is in the y shaped connector under the manifold and when is it on the service schedule to replace?

 

[gezmeister]

Its in the lower breather pipe iirc

 

[Phillc]

Dont replace it, remove it and put in a catch tank.

 

[Cupra Ross]

Dont replace it, remove it and put in a catch tank.

What Phil said

 

[Mark300zx]

Dont replace it, remove it and put in a catch tank.

No thanks, some breather systems create purging systems throughout the engine, if you remove them out of the system, then no vacuum or positive pressure when the engine is designed for it.

 

[Cupra Ross]

No thanks, some breather systems create purging systems throughout the engine, if you remove them out of the system, then no vacuum or positive pressure when the engine is designed for it.

You're not removing the breather system. You're stopping it from depositing all of its sh*te back into your oil and getting rid of the factory spec chocolate hoses in one foul swoop.

 

[Mark300zx]

You're not removing the breather system. You're stopping it from depositing all of its sh*te back into your oil and getting rid of the factory spec chocolate hoses in one foul swoop.

If you have a valve that's designed to work under certain conditions and you remove it then you are altering the breather system, this may or may not mean you are no longer have negative or positive pressure where the engine wants it.

I don't have a problem with catch cans but I do have a problem with removing the pcv valve.