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I recently noticed an oil leak from the PCV valve:
The PCV valve was replaced 4 years ago, with Beck/Arnley 045-0358. It was exactly the same as OEM. So, I ordered another Beck/Arnley. No longer "Made in Japan". When I was installing it, it came apart (due to insufficient glue?). This is the internal structure of PCV valve:
I ended up removing the O-rings from the broken PCV valve, and switched to the old one. Then the broken was returned. The oil leak is stopped.
The PCV valve seems very simple: 2 springs and 1 plastic piece. I think as long as we clean the valve with carb-cleaner once in a while, it should never cause a problem.
BTW, unlike other PCV valves, the V6 PCV valve doesn't make obvious "click" noise, we can tell from the internal structure. I think the proper testing procedure should be: blow into the middle hole (covering the other side). Air should come out from the bottom end; blow into the bottom end, air should not come out.

The PCV valve was replaced 4 years ago, with Beck/Arnley 045-0358. It was exactly the same as OEM. So, I ordered another Beck/Arnley. No longer "Made in Japan". When I was installing it, it came apart (due to insufficient glue?). This is the internal structure of PCV valve:

I ended up removing the O-rings from the broken PCV valve, and switched to the old one. Then the broken was returned. The oil leak is stopped.
The PCV valve seems very simple: 2 springs and 1 plastic piece. I think as long as we clean the valve with carb-cleaner once in a while, it should never cause a problem.
BTW, unlike other PCV valves, the V6 PCV valve doesn't make obvious "click" noise, we can tell from the internal structure. I think the proper testing procedure should be: blow into the middle hole (covering the other side). Air should come out from the bottom end; blow into the bottom end, air should not come out.