Test for PCV Valve

[TimWills28]

What is the correct test for PCV Valve problems?

Car seems to be fine...

But when removing the dipstick or oil cap, engine runs rough, when replaced engine idles fine...

Does this mean it's good or do I need to replace?

Need to put this to bed lol

 

[JJ.Foulds]

mine also runs rough, but think thats normal caus your causing a pressure loss by taking it out? or something lol.

 

[S3AMK20VT]

just replace it for £40 http://fr-rtuning-shop.co.uk/index.php?_a=product&product_id=3952

 

[XFi]

You are correct if you remove the cap it should run a little rough. If your engine note doesn't change then it means you have a vacuum leak somewhere.