Vacuum Chamber
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 vacuum chamber. Visually inspect vacuum chamber for clogging, cracks and damage. Apply air pressure to port "A" and ensure air flows from port "B". See Fig 1 . Apply air pressure to port "B". Air should flow from port "A". Replace vacuum chamber as necessary.