Ford 2003 Mustang Workshop Manual page 894

SECTION 303-00: Engine System — General Information
GENERAL PROCEDURES
Piston —Ring-to-Groove Clearance
1. Inspect the piston for ring land damage or accelerated wear.
2. Measure the piston ring-to-groove clearance.
Refer to the appropriate section in Group
If out of specification, install new components as necessary. Refer to the appropriate
section in Group 303 for the procedure.
2003 Mustang Workshop Manual
303 for the procedure.