Valve - Guide Inner Diameter

WARNING: This page is about a different car, the 2003 Ford RV Cutaway, 2003 Ford Econoline, 2003 Ford E550 Super Duty, 2003 Ford E450 Super Duty, and 2003 Ford Cutaway. However, it is still accessible from the selected car via links, so may be relevant.

Measure the inner diameter of the valve guides in two directions where indicated.
- Refer to SPECIFICATIONS in the appropriate ENGINE article.
Fig 1: Measuring Inner Diameter Of Valve Guides
Courtesy of FORD MOTOR CO.
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.