1y blocked breather

[rikpal]

once again having problems with engine loosing oil when under strain, gassing I think its called!
last time someone sugested the crank case breather blocked. I'm assuming this is the round disc type thing on top of the rocker cover with 2 hoses attatched.
Is it possible to check if its working? or do i just put a new one on.
I've pressure tested the cylinders etc & that side of it seems fine. so hoprfully this is the answer.

I've tried finding earlier threads on this but to no avail, so sorry if this is rehashing old topics

Cheers
Rik

[camper]

Run a 1Y myself.Crankcase breather is the plastic pipe flanged screwed into the engine block.Its close to the oil filter housing.The breather pipe goes up to fit into the mushroom on the cam cover.

[rikpal]

Thought that was the one, seems to be clear . so where to go now.
Thanks for the info though.