F 250 2WD Pickup V8-6.9L DSL (1985)
Vacuum Pump: Testing and Inspection
A-3 System Integrity
^ Check gauge and connections for leaks.
^ Check pully fit-to-shaft.
^ Check that engine curbe idle rpm is at specifications.
^ Repeat procedure in step A2, vacuum pump output test. See: A-2 Vacuum Pump Output
^ Is vacuum at or above specified level?
YES -- Go to A4. See: A-4 Vacuum System Check
NO -- Replace vacuum pump.
