Valve - Guide Inner Diameter
- Measure the inner diameter of the valve guides in two directions where indicated.
- For the procedure, refer to ENGINE - 4.6L AND 5.4L (2V) for Expedition or ENGINE 5.4L (4V) for Navigator.
- If the valve guide is not within specifications, ream the valve guide and install a valve with an oversize stem or remove the valve guide and install a new valve guide.