PCV Valve

[iCasper]

PCV Valce Motorcraft ev255

Blow test failed?


I got two new valves from Rockauto and I am wondering that I can blow through it in both directions. It rattles.


That valve should allow flow only in one direction?

 

[XLTrunner]

Nope...you're all good. They are designed to flow in both directions. The rattle is, of course, the inner plug. It's when they don't rattle that you need to be concerned about replacing them.