Nissan RB30 PCV valve

[dom14]

Hi Guys,
Can you please have a look at the picture and tell me which one is the PCV valve? It's an RB30 with a carby on duel fuel.
It's very much appreciated.
Thanks

[Parksy]

More than likely number 2.

Edit, have never worked in this engine so it's a guess, but the fact that its the only one directly mounted on the intake manifold is a good indication it's it.

[dom14]

More than likely number 2.

Edit, have never worked in this engine so it's a guess, but the fact that its the only one directly mounted on the intake manifold is a good indication it's it.

Yes, I thought too, I took off the valve from there, and checked it, works fine, no clogging.

I wonder what's causing slow blowing of oil from the top of the rocker cover(gasket and where the PCV hose joins it)?!