F 150 2WD Pickup V8-5.4L Prop SOHC VIN Z (1998)
Valve Guide: Testing and Inspection
1. Measure the inner diameter of the valve guides in two directions where indicated.
1
intake
2
exhaust
2. If the valve guide is not within specification, ream the valve guide and install a valve with an oversize stem or remove the valve guide and install a
new valve guide.
