Bad PCV valves?
I inspected the PCV valves on my 2005 545i over the weekend and they appear to be okay although I don't know for sure. Can they be worn out but appear intact?
Does the spring tension need to be at a certain level for them to work properly? Are there other PCV related components that fail and can be fixed easily?
My car has all the characteristics of a bad PCV valve e.g dumping oil into the intake manifold. The car produces blue smoke after idling for long periods, but otherwise no smoking. Engine runs strong, no misfires.
Can anyone help with a diagnosis on this?