Mustang GT V8-4.6L SOHC VIN X (1998)
Suspension Strut / Shock Absorber: Testing and Inspection
Bench Test
With the shock absorber right side up (as installed in vehicle), extend it fully. Then turn the shock absorber upside down and fully compress it. Repeat
this procedure at least three times to make sure that any trapped air has been expelled. Now place the shock absorber right side up in a vise and hand
stroke the shock absorber. Check the shock absorber insulators for the following types of damage and wear:
1. if the shock absorber is properly primed, in its installed position and there is a lag or a skip occurring near mid-stroke of the shaft, reverse travel
direction.
2. if there is any seizing during the shaft full travel, except at either end of the travel.
3. if upon the shaft fast, reverse stroke, there is any noise encountered other than a faint swish, such as a clicking sound.
4. if there are excessive fluid leaks and the shock absorber actions remain erratic after purging air, replace the shock absorber.