Originally posted by "Someone"
Originally posted by Illswyn
Easiest way to test the pcv valve on my mazda is to shake it and to do that you gotta remove it.
If you can test it still on the car thatd be best if its hard to reach. But it doesnt hurt to replace it wont cost but maybe $3 or so.
You can simply test em by pinching off the hose and listening for a click with ear or car stethescope.