Piston Ring End Gap

SPECIAL TOOL(S) / GENERAL EQUIPMENT

Feeler Gauge

NOTE: Refer to the ENGINE - 2.0L DURATEC-HE or ENGINE - 2.0L ECOBOOST for the specification.

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

Fig 1: Pushing Piston Ring In Cylinder To Bottom Of Ring Travel Using Piston Without Rings

Courtesy of FORD MOTOR CO.

Use a piston without rings to push a piston ring in a cylinder to the bottom of ring travel.
Using the Feeler Gauge Set measure the top piston ring end gap and the second piston ring end gap
General Equipment : Feeler Gauge

Fig 2: Measuring Top Piston Ring End Gap And Second Piston Ring End Gap Using Feeler Gauge Set

Courtesy of FORD MOTOR CO.