Join Date: Mar 2002
Location: Austin, TX, USA
After trying one of the other tests, if you suspect they are not working, remove the clip from the actuator rod and servo from the body. Make sure the little red paper washer is installed between the servo and body. While the servo is off, you can apply a vacuum to the port to be sure it will hold a vacuum.
68 Coupe, 350 w/ Edelbrock Performer RPM heads, cam, intake, 700R4, Dave's small body HEI