System Inspection - MPV
WARNING: This page is about a different car, the 2001 Mazda Protege, 2001 Mazda Millenia, 2001 Mazda MX-5 Miata, 2001 Mazda MPV, and 2001 Mazda 626. However, it is still accessible from the selected car via links, so may be relevant.
Remove PCV valve from valve cover. Blow air into port "A". See Fig 1 . Air should flow from port "C". Blow air into port "B". Air should flow from port "C". Blow air into ports "B" or "C". Air should not flow from port "A". Repair as necessary. If hose is okay, replace PCV valve.