Valve Guide Inner Diameter
For information on Ford Color Coded Illustrations refer to OEM Color Coding .
Check
NOTE:
Refer to the appropriate engine article
for the specification.
-
NOTE: Valve guides tend to wear in an hourglass pattern. The ball gauge can be inserted into the combustion chamber side of the valve guide, if necessary.
- Use a ball gauge to determine the inside diameter of the valve guides in 2 directions at the top, middle and bottom of the valve guide.
- Measure the ball gauge with a micrometer.
- If the valve guide is not within specifications, install a new cylinder head assembly.