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.
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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.