WARNING: This page is about a different car, the 2003 Mazda Protege5 and 2003 Mazda Protege. However, it is still accessible from the selected car via links, so may be relevant.
Measure the free length of the pressure spring.
Replace the pressure spring if necessary.
Free length
45.94 mm {1.809 in}
Fig 1: Measuring Free Length Of Pressure Spring (ZM)