F 250 4WD HD Pickup V8-460 7.5L VIN G EFI (1997)
5. Disconnect upper intake manifold vacuum fitting connections by disconnecting:
a. vacuum line to MAP sensor
b. vacuum line to EGR external pressure valve
6. Disconnect EGR and PCV systems by disconnecting:
a. EGR valve flange nut
b. PCV hose at rear of upper intake manifold
