I have a 05 6i. Where is the pcv valve located? I dont see one that is serviceable. I asked my dealer and he told me that is under the valve cover and you change it when you change the timing belt. But after calling Mazda and reading on here the car has chain instead of belt.

 

The PCV Valve on the 4cyl. is located at the top of the oil seperator which is located at the front of the motor just below the intake manifold. Hope this helps.

 

Thanks.