Piston Ring End Gap

For information on Ford Color Coded Illustrations, refer to OEM COLOR CODING

Special Tool(s)

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Feeler Gauge Set303-D027 (D81L-4201-A) or equivalent

NOTE: Use care when fitting piston rings to avoid possible damage to the piston ring or the cylinder bore.

NOTE: Piston rings should not be transferred from one piston to another.

NOTE: Refer to the appropriate Engine article for the specification.

NOTE: The cylinder bore must be within specification for taper and out-of-round.

Use a piston without rings to push a piston ring in a cylinder to the bottom of ring travel.

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Use the Feeler Gauge Set to measure the top piston ring end gap and the second piston ring end gap.

Courtesy of FORD MOTOR COMPANY